JP4113281B2 - Method for producing cyclopentenone derivative - Google Patents
Method for producing cyclopentenone derivative Download PDFInfo
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- JP4113281B2 JP4113281B2 JP10686598A JP10686598A JP4113281B2 JP 4113281 B2 JP4113281 B2 JP 4113281B2 JP 10686598 A JP10686598 A JP 10686598A JP 10686598 A JP10686598 A JP 10686598A JP 4113281 B2 JP4113281 B2 JP 4113281B2
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- cyclopentenone derivative
- Prior art date
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- BZKFMUIJRXWWQK-UHFFFAOYSA-N Cyclopentenone Chemical class O=C1CCC=C1 BZKFMUIJRXWWQK-UHFFFAOYSA-N 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000003446 ligand Substances 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 8
- 150000002736 metal compounds Chemical class 0.000 claims description 7
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims description 6
- 125000001424 substituent group Chemical group 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 claims description 4
- 125000004185 ester group Chemical group 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical group [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 125000005595 acetylacetonate group Chemical group 0.000 claims description 3
- 125000003368 amide group Chemical group 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 125000003828 azulenyl group Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 claims description 3
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 claims description 3
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000007848 Bronsted acid Substances 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 125000000304 alkynyl group Chemical group 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N endo-cyclopentadiene Natural products C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 claims 1
- 238000005481 NMR spectroscopy Methods 0.000 description 12
- -1 1-5-hexenyl Chemical group 0.000 description 11
- 239000000126 substance Substances 0.000 description 9
- 229910052723 transition metal Inorganic materials 0.000 description 9
- 150000003624 transition metals Chemical class 0.000 description 9
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 238000005160 1H NMR spectroscopy Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 6
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 6
- 125000002534 ethynyl group Chemical class [H]C#C* 0.000 description 6
- DQQNMIPXXNPGCV-UHFFFAOYSA-N 3-hexyne Chemical compound CCC#CCC DQQNMIPXXNPGCV-UHFFFAOYSA-N 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical group CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- HWQCKYCZHWBYJN-UHFFFAOYSA-N 2,3,4,5-tetrabutylcyclopent-2-en-1-one Chemical compound CCCCC1C(CCCC)C(CCCC)=C(CCCC)C1=O HWQCKYCZHWBYJN-UHFFFAOYSA-N 0.000 description 2
- BMCFXTKUUMINRS-UHFFFAOYSA-N 2,3,4,5-tetraethylcyclopent-2-en-1-one Chemical compound CCC1C(CC)C(CC)=C(CC)C1=O BMCFXTKUUMINRS-UHFFFAOYSA-N 0.000 description 2
- OYJPHCIJQKVSSN-UHFFFAOYSA-N 2,3,4,5-tetraphenylcyclopent-2-en-1-one Chemical compound O=C1C(C=2C=CC=CC=2)C(C=2C=CC=CC=2)C(C=2C=CC=CC=2)=C1C1=CC=CC=C1 OYJPHCIJQKVSSN-UHFFFAOYSA-N 0.000 description 2
- MBNGWKREFHKKMO-UHFFFAOYSA-N 2,3,4,5-tetrapropylcyclopent-2-en-1-one Chemical compound CCCC1C(CCC)C(CCC)=C(CCC)C1=O MBNGWKREFHKKMO-UHFFFAOYSA-N 0.000 description 2
- KLNAGKGNWQUMFR-UHFFFAOYSA-N 2,3-dimethyl-2,3-dihydroinden-1-one Chemical compound C1=CC=C2C(=O)C(C)C(C)C2=C1 KLNAGKGNWQUMFR-UHFFFAOYSA-N 0.000 description 2
- XNMQEEKYCVKGBD-UHFFFAOYSA-N 2-butyne Chemical compound CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical group CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000000010 aprotic solvent Substances 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical group OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000921 elemental analysis Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001979 organolithium group Chemical group 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- IUGYQRQAERSCNH-UHFFFAOYSA-N pivalic acid Chemical group CC(C)(C)C(O)=O IUGYQRQAERSCNH-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- QMBQEXOLIRBNPN-UHFFFAOYSA-L zirconocene dichloride Chemical compound [Cl-].[Cl-].[Zr+4].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 QMBQEXOLIRBNPN-UHFFFAOYSA-L 0.000 description 2
- 125000004973 1-butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000006017 1-propenyl group Chemical group 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical group CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101100391174 Dictyostelium discoideum forC gene Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- JRXXLCKWQFKACW-UHFFFAOYSA-N biphenylacetylene Chemical group C1=CC=CC=C1C#CC1=CC=CC=C1 JRXXLCKWQFKACW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000522 cyclooctenyl group Chemical group C1(=CCCCCCC1)* 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical group CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical group CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- GZTNBKQTTZSQNS-UHFFFAOYSA-N oct-4-yne Chemical compound CCCC#CCCC GZTNBKQTTZSQNS-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 150000002901 organomagnesium compounds Chemical class 0.000 description 1
- 125000002734 organomagnesium group Chemical group 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical group CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は、シクロペンテノン誘導体の製造方法に関するものである。シクロペンテノン誘導体は医薬品や農薬、重合触媒配位子の合成中間体として有用な物質である。
【0002】
【従来の技術】
従来、周期律表4族の遷移金属存在下アセチレン類2分子又はジインと一酸化炭素との反応によってシクロペンテノン誘導体を直接合成する方法は知られていない。また遷移金属存在下、異なるアセチレン2分子と一酸化炭素との反応によってシクロペンテノン誘導体を直接高選択的に合成する方法は知られていない。
【0003】
【発明が解決しようとする課題】
本発明は、上記実情を鑑み鋭意努力して達成されたもので、その目的はアセチレン2分子又はジインと一酸化炭素から直接特定の構造を有するシクロペンテノン誘導体を製造する新規な製造方法を提供することにあり、特に異なるアセチレン2分子を用いても高選択的にシクロペンテノン誘導体を製造することのできる方法を提供することにある。
【0004】
【課題を解決するための手段】
本発明の要旨は、まず、下記一般式(1)で表されるメタラシクロペンタジエンと下記一般式(2)で表される金属化合物存在下、一酸化炭素と反応させ、ついでブレンステッド酸と反応させることを特徴とする下記一般式(3)で表されるシクロペンテノン誘導体の製造方法に存する。
【0005】
【化2】
【0006】
(一般式(1)〜(3)中、R1〜R4、およびRは、それぞれ、アルキル基、アルケニル基、アルキニル基、芳香族基、シリル基、アルコキシ基、エステル基、アミノ基、を表す。但しこれらの基は、炭素数が1〜20でありかつ置換基を有していてもよい。またR1〜R4のうち2つ以上が結合して環を形成していてもよい。一般式(1)中、Mはジルコニウム、M'はリチウム、Lはシクロペンタジエニル基、インデニル基、フルオレニル基、アズレニル基、炭化水素オキシ基、アミド基、アセチルアセトナート基、カルボキシ基、ホスフィン配位子、アミン配位子、エーテル配位子、およびこれらが適当な架橋基により連結した配位子から選択されるものであって、各基はいずれも置換基を有していてもよい配位子、nは2を表す。)
【0007】
【発明の実施の形態】
以下、本発明を詳細に説明する。まず、下記一般式(1)で表されるメタラシクロペンタジエンについて説明する。
【0008】
【化3】
【0009】
一般式(1)中、Mは遷移金属を表す。遷移金属は周期律表上の3〜10族の金属を意味する。遷移金属としては、特に制限されないが、好ましくは3〜6族の遷移金属、更に好ましくは、チタン、ジルコニウム、ハフニウム等の4族の遷移金属およびバナジウム、ニオブ、タンタル等の5族の遷移金属である。
【0010】
一般式(1)中、Lは配位子を表し、その具体例としては、シクロペンタジエニル基、インデニル基、フルオレニル基、アズレニル基、炭化水素オキシ基、アミド基、アセチルアセトナート基、カルボキシ基、ホスフィン配位子、アミン配位子、エーテル配位子、及びこれらが適当な架橋基により、連結した配位子、を有する化合物が挙げられる。なお、上記の各基は、いずれも、置換基を有していてもよい。また、一般式(1)中、nは0〜8、好ましくは1〜4の整数を表す。そして、nが2以上の場合における各配位子は、同一であっても異なっていてもよい。
【0011】
一般式(1)中、R1〜R4はそれぞれ、アルキル基、アルケニル基、芳香族基、シリル基、アルコキシ基、エステル基を表す。但し、これらの基は、炭素数が1〜20であり、かつ置換基を有していてもよい。
【0012】
上記のR1〜R4の具体例としては、メチル、エチル、プロピル、イソプロピル、、ブチル、イソブチル、t−ブチル、ペンチル、ネオペンチル、ヘキシル、オクチル、ノニル、デシル、シクロペンチル、シクロヘキシル、シクロオクチル等のアルキル基、ビニル、アリル、1−プロペニル、1、2又は3−ブテニル、1〜5−ヘキセニル、シクロペンテニル、シクロヘキセニル、シクロオクテニル等のアルケニル基、フェニル、ナフチル、トリル、キシリル等の芳香族基、トリメチルシリル、トリエチルシリル、トリメトキシシリル、トリエトキシシリル、ジフェニルメチルシリル、ジメチルフェニルシリル、トリフェニルシリル等のシリル基、メトキシ、エトキシ、プロポキシ、イソプロポキシ、ブトキシ、イソブトキシ、t−ブトキシなどのアルコキシ基、フェノキシ、ナフトキシ等のアリロキシ基、メチルカルボキシレート、エチルカルボキシレート、プロピルカルボキシレート、イソプロピルカルボキシレート、ブチルカルボキシレート、イソブチルカルボキシレート、t−ブチルカルボキシレート、フェニルカルボキシレート等のエステル基が挙げられる。
【0013】
上記中では、メチル、エチル、n−ブチル、t−ブチル、ヘキシル、フェニル、トリメチルシリル、メチルカルボキシレート、エチルカルボキシレート、t−ブチルカルボキシレート、フェニルカルボキシレートが好ましく、エチル、n−ブチル、t−ブチル、ヘキシル、トリメチルシリル、メチルカルボキシレートが更に好ましい。
【0014】
一般式(1)で表されるメタラシクロペンタジエンは、対応する遷移金属化合物と2分子のアセチレン化合物あるいは1分子のジインとの反応で得ることができる。
【0015】
一般式(2)で表される金属化合物のRの意義は、前記一般式(1)中のR1〜R4におけるのと同義である。用いる金属化合物(2)の金属は通常遷移金属でも典型金属でもよいし、2つ以上の金属を含んだ複合金属化合物でもよい。
【0016】
用いる金属化合物としては有機リチウム、有機マグネシウム化合物およびそれらと銅、亜鉛などとのアート型化合物、有機アルミニウム化合物、有機マンガン化合物、有機亜鉛化合物、有機銅化合物等であり、好ましくは有機リチウム、有機マグネシウム化合物である。
【0017】
これらの一般式(2)で表される金属化合物の量は通常0.001〜10当量、好ましくは0.1〜3当量用いるのがよい。
【0018】
各工程は非プロトン性溶媒の存在下、窒素やアルゴン等の不活性ガス下で行うのが好ましい。非プロトンの溶媒としては、例えば、トルエンのような炭化水素溶媒、クロロベンゼン、メチレンクロリドのようなハロゲン化炭化水素溶媒、エチルエーテル、テトラヒドロフラン、ジメトキシメタンのようなエーテル系溶媒が挙げられる。これらの中で好ましくはテトラヒドロフランが好ましい。
【0019】
【実施例】
次に実施例により、本発明の内容を具体的に説明するが、本発明はこれらのみに限定されるべきものではない。
【0020】
実施例1
2,3,4,5−テトラエチルシクロペンテノン
【0021】
【化4】
【0022】
窒素下にしたシュレンク反応管に5mlのテトラヒドロフランを加え、ジルコノセンジクロリドを0.292g(1mmol)溶解させる。−78℃に冷却した後、n−ブチルリチウムを2mmol加え、1時間撹拌する。この溶液に3−ヘキシン0.164g(2mmol)加え、1時間室温で撹拌して生成するジルコナシクロペンタジエンを再び−78℃に冷却する。この溶液にn−ブチルリチウムを1mmol加え10分撹拌したのち、一酸化炭素をゆっくりと反応液に吹き込みながら30分間撹拌する。この液を希塩酸で処理して生成物を単離すると収率75%で2,3,4,5−テトラエチルシクロペンテノンが得られた。生成物は1H−NMRと13C−NMR及び元素分析で確認した。
【0023】
1H NMR(CDCl3,TMS)δ for major isomer:0.63(t,J=7.4Hz,3H),0.98(t,J=7.6Hz,3H),1.05(t,J=7.4Hz,3H),1.12(t,J= 7.7Hz,3H),1.32−1.45(m,1H),1.55−1.73(m,2H),1.78−1.90(m.1H),2.15−2.32(m,4H),2.52−2.62(m,1H),2.97−3.00(m,1H). 13C NMR(CDCl3,TMS)δ 10.72, 12.10, 13.36,13.52, 16.34 ,18.68, 20.69, 21.87, 43.11, 51.63, 140.76, 173.40, 210.50. Anal.calcd forC13H22O:C,80.35;H,11.41. Found:C,79.92;H.11.38.
【0024】
実施例2
2,3,4,5−テトラプロピルシクロペンテノン
【0025】
【化5】
【0026】
実施例1においての3−ヘキシンの代わりに4−オクチンを用いたところ2,3,4,5−テトラプロピルシクロペンテノンが収率72%で得られた。生成物は13C−NMR及びハイマス、元素分析で確認した。
【0027】
13C NMR(CDCl3,TMS)δ 14.17, 14.31, 14.35, 19.83, 20.88, 21.90, 22.03, 25.24, 27.87, 30.78, 30.88. 42.88, 49.87. 139.51, 173.13, 210.77. HRMS calcd for C17H30O: 250.2295; Found: 250.2300. Anal. calcd for C17H30O: C,81.54; H,12.07. Found:C 81.33;H,12.13.
【0028】
実施例3
2,3,4,5−テトラブチルシクロペンテノンの合成
【0029】
【化6】
【0030】
実施例1において3−ヘキシンの代わりに5−デシンを用いたところ2,3,4,5−テトラブチルシクロペンテノンを収率66%で得た。生成物は1H−NMRと13C−NMR及びハイマスで確認した。
【0031】
1H NMR(CDCl3,TMS)δ 0.84−0.97(m,12H),1.19−1.74(m,20H), 2.08−2.15(m,2H), 2.22−2.29(m,2H), 2.44−2.52(m,1H), 2.96(dd,J=5.8, 9.6Hz,1H). 13C NMR(CDCl3,TMS)δ 14.15, 14.30, 14.33, 14.38, 20.08, 20.91, 21.20, 23.38, 26.57, 28.10, 28.30, 30.26, 32.19, 32.46, 34.25, 36.55, 42.88, 49.65, 139.81, 173.32, 211.09. HRMS calcd for C21H38 O306.2921,found306.2923.
【0032】
実施例4
2,3,4,5−テトラフェニルシクロペンテノンの合成
【0033】
【化7】
【0034】
実施例1において3−ヘキシンの代わりにジフェニルアセチレンを用いたところ2,3,4,5−テトラフェニルシクロペンテノンを収率89%で得た。生成物は1H−NMRと13C−NMR及びハイマスで確認した。
【0035】
1H NMR(CDCl3,TMS)δ cis:4.45(d,J=7.3Hz,1H), 4.90(d,J=7.4Hz,1H), 6.84−7.41(m,20H). trans:3.75(d,J=2.0Hz,1H),4.56(d,J=2.2Hz,1H), 6.84−7.40(m,20H). 13C NMR(CDCl3,TMS)δ cis:54.78, 59.82, 126.38, 126.74, 127.68, 128.17, 128.26, 128.51, 128.92, 129.02, 129.47, 129.81, 130.09, 132.09, 135.15, 136.23.138.85,140.83, 166.27,205.81. trans: 57.64, 63.11, 131.78, 134.65,139.32, 140.08, 141.47, 168.95, 182.7. HRMS calcd for C29H22O: 386.1670;Found: 386.1671.
【0036】
実施例4
7,9−ジエチルビシクロ[4,3,0]−6−ノネ−8−ノン
【0037】
【化8】
【0038】
実施例2において3−ヘキシン(2mmol)の代わりに3,8−ドデカジイン(1mmol)を用いたところ収率48%で2,4−ジエチルビシクロ[4,3,0]−1−ノネ−3−ノンを得た。生成物は1H−NMRと13C−NMR及びハイマスで確認した。
【0039】
1H NMR(CDCl3,TMS)δ cis:0.97 (t,J=7.6Hz,3H), 1.06(t,J=7.6Hz,3H), 1.24−1.58(m,3H), 1.69−2.22(m,8H), 2.66(m,1H), 2.87(dt,J=13.3,2.0Hz,1H). 13C NMR(CDCl3,TMS)δ cis:13.61, 13.66, 15.87, 19.22, 25.83, 27.62, 28.79, 30.74.44.00, 50.13, 137.27, 174.51, 210.51trans:11.77, 15.92, 23.85, 25.68, 26.70, 28.37, 35.05, 46.87, 53.69, 138.16, 173.69, 210.25. HRMS calcd for C13H20O: 192.1513; Found:192.1510.
【0040】
実施例5
2,3−ジメチルインダン−1−オンの合成
【0041】
【化9】
【0042】
窒素下にしたシュレンク反応管に5mlのテトラヒドロフランを加え、ジルコノセンジクロリドを0.292g(1mmol)溶解させる。−78℃に冷却した後、フェニルリチウムを2mmol加え、1時間撹拌する。この溶液に2−ブチン(1mmol)加え、1時間80℃で撹拌するとジルコナインデンが生成する。この溶液を再び−78℃に冷却し、この溶液にn−ブチルリチウムを1mmol加え10分撹拌したのち、一酸化炭素をゆっくりと反応液に吹き込みながら30分間撹拌する。この液を希塩酸で処理して生成物を単離すると収率70%で2,3−ジメチルインダン−1−オンが得られた。生成物は1H−NMRと13C−NMR及びハイマスで確認した。
【0043】
1H NMR(CDCl3,TMS)δ cis:1.21(d,J=7.8Hz,3H), 1.23(d,J= 7.5Hz,3H), 2.78−2.85(m,1H). 3.48−3.54(m,1H), 7.36, 7.49, 7.59, 7.74 (4H). trans:1.31(d,J= 7.3Hz,3 H), 1.45 (d, J= 7.1 Hz, 3H), 2.19−2.26(m,1H), 2.90−2.95(m,1H), 7.36, 7.49, 7.59, 7.74(4H). 13C NMR(CDCl3,TMS) δ cis:11.10, 17.31, 36.86,46.30, 123.70, 125.42, 127.44,134.64, 135.35, 159.25, 209.10. trans: 14.14, 19.15, 41.74, 51.45, 123.59, 124.84, 127.44, 134.75, 135.91, 157.73,208.24. HRMS calcd for C11H12O:160.0889;Found:160.0894.
【0044】
実施例6
2,3,4,5−テトラエチル−4,5−ジデュ−テロ−2−シクロペンテ−1−オンの合成
【0045】
【化10】
【0046】
実施例1において希塩酸の代わりに重塩酸を用いたところ収率72%で2,3,4,5−テトラエチル−4,5−ジデューテロ−2−シクロペンテ−1−オンを得た。生成物は1H−NMRと13C−NMR及びハイマスで確認した。
【0047】
1H NMR(CDCl3,TMS)δ 0.63 (t,J=7.4Hz,3H), 0.98(t,J=7.6Hz, 3H), 1.05(t,J=7.4Hz,3H), 1.12(t,J=7.7Hz,3H), 1.32−1.45(m,1H), 1.55−1.73(m,2H), 1.78−1.90(m,1H), 2.15−2.32(m,3H), 2.52−2.62(m,1H). 13C NMR (CDCl3, TMS)δ 10.72, 12.10, 13.36, 13.52, 16.34, 18.68, 20.69, 21.87, 42.60, 51.05, 140.76, 173.40, 210.50. HRMS calcd for C13H20D2O:196.1793; Found:196.1792.
【0048】
【発明の効果】
本発明の製造法はアセチレン類2分子又はジイン1分子と一酸化炭素からメタラシクロペンタジエンを経由してワンポットでシクロペンテノン誘導体を製造できる方法であり、特に2つの異なったアセチレン分子から高選択的にシクロペンテノン誘導体を製造できる方法であり、簡便で効率の良い製造方法を提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a cyclopentenone derivative. Cyclopentenone derivatives are useful substances as synthetic intermediates for pharmaceuticals, agricultural chemicals, and polymerization catalyst ligands.
[0002]
[Prior art]
Conventionally, a method for directly synthesizing a cyclopentenone derivative by reacting two molecules of acetylenes or diyne with carbon monoxide in the presence of a transition metal of Group 4 of the periodic table is not known. In addition, there is no known method for directly and selectively synthesizing a cyclopentenone derivative by reacting two different acetylene molecules with carbon monoxide in the presence of a transition metal.
[0003]
[Problems to be solved by the invention]
The present invention has been accomplished with diligent efforts in view of the above circumstances, and its object is to provide a novel production method for producing a cyclopentenone derivative having a specific structure directly from two acetylene molecules or diyne and carbon monoxide. In particular, it is to provide a method capable of producing a cyclopentenone derivative with high selectivity even when two different acetylene molecules are used.
[0004]
[Means for Solving the Problems]
The gist of the present invention is to first react a metallacyclopentadiene represented by the following general formula (1) with carbon monoxide in the presence of a metal compound represented by the following general formula (2), and then react with a Bronsted acid. The present invention resides in a method for producing a cyclopentenone derivative represented by the following general formula (3).
[0005]
[Chemical 2]
[0006]
(In the general formulas (1) to (3), R 1 to R 4 and R represent an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a silyl group, an alkoxy group, an ester group, and an amino group, respectively. However, these groups each have 1 to 20 carbon atoms and may have a substituent, or two or more of R 1 to R 4 may be bonded to form a ring. In general formula (1), M is zirconium , M ′ is lithium , L is cyclopentadienyl group, indenyl group, fluorenyl group, azulenyl group, hydrocarbon oxy group, amide group, acetylacetonate group, carboxy group, A phosphine ligand, an amine ligand, an ether ligand, and a ligand in which these are linked by an appropriate bridging group, each group having a substituent A good ligand , n represents 2. )
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail. First, the metallacyclopentadiene represented by the following general formula (1) will be described.
[0008]
[Chemical Formula 3]
[0009]
In general formula (1), M represents a transition metal. The transition metal means a metal of group 3 to 10 on the periodic table. The transition metal is not particularly limited, but is preferably a group 3-6 transition metal, more preferably a group 4 transition metal such as titanium, zirconium or hafnium, and a group 5 transition metal such as vanadium, niobium or tantalum. is there.
[0010]
In the general formula (1), L represents a ligand, and specific examples thereof include cyclopentadienyl group, indenyl group, fluorenyl group, azulenyl group, hydrocarbon oxy group, amide group, acetylacetonate group, carboxy group. And a compound having a group, a phosphine ligand, an amine ligand, an ether ligand, and a ligand in which these are linked by an appropriate crosslinking group. Each of the above groups may have a substituent. Moreover, in general formula (1), n represents 0-8, Preferably the integer of 1-4 is represented. And each ligand in the case where n is 2 or more may be the same or different.
[0011]
In the general formula (1), R 1 to R 4 each represents an alkyl group, an alkenyl group, an aromatic group, a silyl group, an alkoxy group, or an ester group. However, these groups have 1 to 20 carbon atoms and may have a substituent.
[0012]
Specific examples of R 1 to R 4 include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, neopentyl, hexyl, octyl, nonyl, decyl, cyclopentyl, cyclohexyl, cyclooctyl and the like. Alkyl groups, vinyl, allyl, 1-propenyl, 1,2 or 3-butenyl, alkenyl groups such as 1-5-hexenyl, cyclopentenyl, cyclohexenyl, cyclooctenyl, aromatic groups such as phenyl, naphthyl, tolyl, xylyl, Silyl groups such as trimethylsilyl, triethylsilyl, trimethoxysilyl, triethoxysilyl, diphenylmethylsilyl, dimethylphenylsilyl, triphenylsilyl, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, t-butoxy Alkoxy groups such as phenoxy, naphthoxy, etc., ester groups such as methyl carboxylate, ethyl carboxylate, propyl carboxylate, isopropyl carboxylate, butyl carboxylate, isobutyl carboxylate, t-butyl carboxylate, phenyl carboxylate Is mentioned.
[0013]
Among the above, methyl, ethyl, n-butyl, t-butyl, hexyl, phenyl, trimethylsilyl, methyl carboxylate, ethyl carboxylate, t-butyl carboxylate, and phenyl carboxylate are preferable, and ethyl, n-butyl, t- Butyl, hexyl, trimethylsilyl and methylcarboxylate are more preferred.
[0014]
The metallacyclopentadiene represented by the general formula (1) can be obtained by reacting the corresponding transition metal compound with two molecules of acetylene compound or one molecule of diyne.
[0015]
The meaning of R in the metal compound represented by the general formula (2) is the same as that in R 1 to R 4 in the general formula (1). The metal of the metal compound (2) to be used may be a transition metal or a typical metal, or a composite metal compound containing two or more metals.
[0016]
Examples of metal compounds to be used include organolithium, organomagnesium compounds and art-type compounds of these with copper, zinc, etc., organoaluminum compounds, organomanganese compounds, organozinc compounds, organocopper compounds, etc., preferably organolithium, organomagnesium A compound.
[0017]
The amount of the metal compound represented by the general formula (2) is usually 0.001 to 10 equivalents, preferably 0.1 to 3 equivalents.
[0018]
Each step is preferably performed in the presence of an aprotic solvent under an inert gas such as nitrogen or argon. Examples of the aprotic solvent include hydrocarbon solvents such as toluene, halogenated hydrocarbon solvents such as chlorobenzene and methylene chloride, and ether solvents such as ethyl ether, tetrahydrofuran and dimethoxymethane. Of these, tetrahydrofuran is preferred.
[0019]
【Example】
Next, the content of the present invention will be specifically described by way of examples. However, the present invention should not be limited to these examples.
[0020]
Example 1
2,3,4,5-tetraethylcyclopentenone
[Formula 4]
[0022]
5 ml of tetrahydrofuran is added to a Schlenk reaction tube under nitrogen to dissolve 0.292 g (1 mmol) of zirconocene dichloride. After cooling to −78 ° C., 2 mmol of n-butyllithium is added and stirred for 1 hour. To this solution, 0.164 g (2 mmol) of 3-hexyne is added, and the resulting zirconacyclopentadiene produced by stirring at room temperature is cooled to -78 ° C again. After adding 1 mmol of n-butyllithium to this solution and stirring for 10 minutes, it is stirred for 30 minutes while blowing carbon monoxide slowly into the reaction solution. When this solution was treated with dilute hydrochloric acid to isolate the product, 2,3,4,5-tetraethylcyclopentenone was obtained in a yield of 75%. The product was confirmed by 1 H-NMR, 13 C-NMR and elemental analysis.
[0023]
1 H NMR (CDCl 3 , TMS) δ for major isomer: 0.63 (t, J = 7.4 Hz, 3H), 0.98 (t, J = 7.6 Hz, 3H), 1.05 (t, J = 7.4 Hz, 3H), 1.12 (t, J = 7.7 Hz, 3H), 1.32-1.45 (m, 1H), 1.55-1.73 (m, 2H), 1.78-1.90 (m.1H), 2.15-2.32 (m, 4H), 2.52-2.62 (m, 1H), 2.97-3.00 (m, 1H) ). 13 C NMR (CDCl 3 , TMS) δ 10.72, 12.10, 13.36, 13.52, 16.34, 18.68, 20.69, 21.87, 43.11, 51.63 140.76, 173.40, 210.50. Anal. calcd forC 13 H 22 O: C , 80.35; H, 11.41. Found: C, 79.92; 11.38.
[0024]
Example 2
2,3,4,5-tetrapropylcyclopentenone
[Chemical formula 5]
[0026]
When 4-octyne was used instead of 3-hexyne in Example 1, 2,3,4,5-tetrapropylcyclopentenone was obtained in a yield of 72%. The product was confirmed by 13 C-NMR, high mass and elemental analysis.
[0027]
13 C NMR (CDCl 3 , TMS) δ 14.17, 14.31, 14.35, 19.83, 20.88, 21.90, 22.03, 25.24, 27.87, 30.78, 30.88. 42.88, 49.87. 139.51, 173.13, 210.77. HRMS calcd for C 17 H 30 O : 250.2295; Found: 250.2300. Anal. calcd for C 17 H 30 O: C, 81.54; H, 12.07. Found: C 81.33; H, 12.13.
[0028]
Example 3
Synthesis of 2,3,4,5-tetrabutylcyclopentenone
[Chemical 6]
[0030]
When 5-decine was used instead of 3-hexyne in Example 1, 2,3,4,5-tetrabutylcyclopentenone was obtained in a yield of 66%. The product was confirmed by 1 H-NMR, 13 C-NMR and high mass.
[0031]
1 H NMR (CDCl 3 , TMS) δ 0.84-0.97 (m, 12H), 1.19-1.74 (m, 20H), 2.08-2.15 (m, 2H), 2 .22-2.29 (m, 2H), 2.44-2.52 (m, 1H), 2.96 (dd, J = 5.8, 9.6 Hz, 1H). 13 C NMR (CDCl 3 , TMS) δ 14.15, 14.30, 14.33, 14.38, 20.08, 20.91, 21.20, 23.38, 26.57, 28.10, 28.30, 30.26, 32.19, 32.46, 34.25, 36.55, 42.88, 49.65, 139.81, 173.32, 211.09. HRMS calcd for C 21 H 38 O 306.2921, found 306.2923.
[0032]
Example 4
Synthesis of 2,3,4,5-tetraphenylcyclopentenone
[Chemical 7]
[0034]
When diphenylacetylene was used instead of 3-hexyne in Example 1, 2,3,4,5-tetraphenylcyclopentenone was obtained in 89% yield. The product was confirmed by 1 H-NMR, 13 C-NMR and high mass.
[0035]
1 H NMR (CDCl 3 , TMS) δ cis: 4.45 (d, J = 7.3 Hz, 1H), 4.90 (d, J = 7.4 Hz, 1H), 6.84-7.41 ( m, 20H). trans: 3.75 (d, J = 2.0 Hz, 1H), 4.56 (d, J = 2.2 Hz, 1H), 6.84-7.40 (m, 20H). 13C NMR (CDCl 3, TMS) δ cis: 54.78, 59.82, 126.38, 126.74, 127.68, 128.17, 128.26, 128.51, 128.92, 129.02, 129.47, 129.81, 130.09, 132.09, 135.15, 136.23.138.85, 140.83, 166.27, 205.81. trans: 57.64, 63.11, 131.78, 134.65, 139.32, 140.08, 141.47, 168.95, 182.7. HRMS calcd for C 29 H 22 O: 386.1670; Found: 386.1671.
[0036]
Example 4
7,9-diethylbicyclo [4,3,0] -6-none-8-non
[Chemical 8]
[0038]
In Example 2, when 3,8-dodecadiine (1 mmol) was used instead of 3-hexyne (2 mmol), 2,4-diethylbicyclo [4,3,0] -1-none-3-y was obtained in a yield of 48%. Got non. The product was confirmed by 1 H-NMR, 13 C-NMR and high mass.
[0039]
1 H NMR (CDCl 3 , TMS) δ cis: 0.97 (t, J = 7.6 Hz, 3H), 1.06 (t, J = 7.6 Hz, 3H), 1.24-1.58 ( m, 3H), 1.69-2.22 (m, 8H), 2.66 (m, 1H), 2.87 (dt, J = 13.3, 2.0 Hz, 1H). 13 C NMR (CDCl 3 , TMS) δ cis: 13.61, 13.66, 15.87, 19.22, 25.83, 27.62, 28.79, 30.74.44.00, 50. 13, 137.27, 174.51, 210.51 trans: 11.77, 15.92, 23.85, 25.68, 26.70, 28.37, 35.05, 46.87, 53.69, 138.16, 173.69, 210.25. HRMS calcd for C 13 H 20 O : 192.1513; Found: 192.1510.
[0040]
Example 5
Synthesis of 2,3-dimethylindan-1-one
[Chemical 9]
[0042]
5 ml of tetrahydrofuran is added to a Schlenk reaction tube under nitrogen to dissolve 0.292 g (1 mmol) of zirconocene dichloride. After cooling to −78 ° C., 2 mmol of phenyl lithium is added and stirred for 1 hour. When 2-butyne (1 mmol) is added to this solution and stirred at 80 ° C. for 1 hour, zirconaindene is produced. This solution is cooled again to -78 ° C., 1 mmol of n-butyllithium is added to this solution and stirred for 10 minutes, and then stirred for 30 minutes while carbon monoxide is slowly blown into the reaction solution. When this liquid was treated with dilute hydrochloric acid to isolate the product, 2,3-dimethylindan-1-one was obtained in a yield of 70%. The product was confirmed by 1 H-NMR, 13 C-NMR and high mass.
[0043]
1 H NMR (CDCl 3 , TMS) δ cis: 1.21 (d, J = 7.8 Hz, 3H), 1.23 (d, J = 7.5 Hz, 3H), 2.78-2.85 ( m, 1H). 3.48-3.54 (m, 1H), 7.36, 7.49, 7.59, 7.74 (4H). trans: 1.31 (d, J = 7.3 Hz, 3 H), 1.45 (d, J = 7.1 Hz, 3H), 2.19-2.26 (m, 1H), 2.90 -2.95 (m, 1H), 7.36, 7.49, 7.59, 7.74 (4H). 13 C NMR (CDCl 3 , TMS) δ cis: 11.10, 17.31, 36.86, 46.30, 123.70, 125.42, 127.44, 134.64, 135.35, 159. 25, 209.10. trans: 14.14, 19.15, 41.74, 51.45, 123.59, 124.84, 127.44, 134.75, 135.91, 157.73, 208.24. HRMS calcd for C 11 H 12 O : 160.0889; Found: 160.0894.
[0044]
Example 6
Synthesis of 2,3,4,5-tetraethyl-4,5-didutero-2-cyclopent-1-one
[Chemical Formula 10]
[0046]
When deuterated hydrochloric acid was used in place of dilute hydrochloric acid in Example 1, 2,3,4,5-tetraethyl-4,5-dideutero-2-cyclopent-1-one was obtained in a yield of 72%. The product was confirmed by 1 H-NMR, 13 C-NMR and high mass.
[0047]
1 H NMR (CDCl 3 , TMS) δ 0.63 (t, J = 7.4 Hz, 3H), 0.98 (t, J = 7.6 Hz, 3H), 1.05 (t, J = 7. 4 Hz, 3H), 1.12 (t, J = 7.7 Hz, 3H), 1.32-1.45 (m, 1H), 1.55-1.73 (m, 2H), 1.78- 1.90 (m, 1H), 2.15-2.32 (m, 3H), 2.52-2.62 (m, 1H). 13 C NMR (CDCl 3 , TMS) δ 10.72, 12.10, 13.36, 13.52, 16.34, 18.68, 20.69, 21.87, 42.60, 51.05 140.76, 173.40, 210.50. HRMS calcd for C 13 H 20 D 2 O: 196.1793; Found: 196.1792.
[0048]
【The invention's effect】
The production method of the present invention is a method in which a cyclopentenone derivative can be produced from two acetylene molecules or one diyne molecule and carbon monoxide via a metallacyclopentadiene in one pot, and particularly highly selective from two different acetylene molecules. In addition, a cyclopentenone derivative can be produced, and a simple and efficient production method can be provided.
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