RU2013139300A - Способ получения 4-амино-3-хлор-5-фтор-6-(замещенных)пиколинатов - Google Patents
Способ получения 4-амино-3-хлор-5-фтор-6-(замещенных)пиколинатов Download PDFInfo
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- RU2013139300A RU2013139300A RU2013139300/04A RU2013139300A RU2013139300A RU 2013139300 A RU2013139300 A RU 2013139300A RU 2013139300/04 A RU2013139300/04 A RU 2013139300/04A RU 2013139300 A RU2013139300 A RU 2013139300A RU 2013139300 A RU2013139300 A RU 2013139300A
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- Prior art keywords
- formula
- chloro
- amino
- fluoro
- alkyl
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- 238000004519 manufacturing process Methods 0.000 title 1
- ARMLHIZMMUSZAS-UHFFFAOYSA-N 3-chloro-4,5,6-trifluoropyridine-2-carbonitrile Chemical compound FC1=NC(C#N)=C(Cl)C(F)=C1F ARMLHIZMMUSZAS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000000217 alkyl group Chemical group 0.000 claims abstract 7
- 229910052801 chlorine Inorganic materials 0.000 claims abstract 6
- 229910052794 bromium Inorganic materials 0.000 claims abstract 5
- 229910052740 iodine Inorganic materials 0.000 claims abstract 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract 4
- -1 fluoride ions Chemical class 0.000 claims abstract 4
- 229910052736 halogen Inorganic materials 0.000 claims abstract 4
- 125000003710 aryl alkyl group Chemical group 0.000 claims abstract 3
- KFPBGJYBKSQIAI-UHFFFAOYSA-N 3,4,5,6-tetrachloropyridine-2-carbonitrile Chemical compound ClC1=NC(C#N)=C(Cl)C(Cl)=C1Cl KFPBGJYBKSQIAI-UHFFFAOYSA-N 0.000 claims abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000005977 Ethylene Substances 0.000 claims abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 claims abstract 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000002253 acid Substances 0.000 claims abstract 2
- 229910021529 ammonia Inorganic materials 0.000 claims abstract 2
- 125000003118 aryl group Chemical group 0.000 claims abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract 2
- 229910052802 copper Inorganic materials 0.000 claims abstract 2
- 239000010949 copper Substances 0.000 claims abstract 2
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 claims abstract 2
- 230000032050 esterification Effects 0.000 claims abstract 2
- 238000005886 esterification reaction Methods 0.000 claims abstract 2
- 238000003682 fluorination reaction Methods 0.000 claims abstract 2
- 125000001153 fluoro group Chemical group F* 0.000 claims abstract 2
- 150000004820 halides Chemical class 0.000 claims abstract 2
- 150000002367 halogens Chemical class 0.000 claims abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract 2
- 239000001257 hydrogen Substances 0.000 claims abstract 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims abstract 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract 2
- 125000001424 substituent group Chemical group 0.000 claims abstract 2
- 238000006467 substitution reaction Methods 0.000 claims abstract 2
- 229910052723 transition metal Inorganic materials 0.000 claims abstract 2
- 150000003624 transition metals Chemical class 0.000 claims abstract 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims 4
- 229910052731 fluorine Inorganic materials 0.000 claims 3
- 125000004400 (C1-C12) alkyl group Chemical group 0.000 claims 2
- 125000004767 (C1-C4) haloalkoxy group Chemical group 0.000 claims 1
- 125000004765 (C1-C4) haloalkyl group Chemical group 0.000 claims 1
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 claims 1
- 125000004399 C1-C4 alkenyl group Chemical group 0.000 claims 1
- 238000005576 amination reaction Methods 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000010641 nitrile hydrolysis reaction Methods 0.000 claims 1
- GQXQJVKBGMHOMF-UHFFFAOYSA-N 4-amino-3-chloro-5,6-difluoropyridine-2-carbonitrile Chemical compound NC1=C(F)C(F)=NC(C#N)=C1Cl GQXQJVKBGMHOMF-UHFFFAOYSA-N 0.000 abstract 2
- 125000003342 alkenyl group Chemical group 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- 125000004438 haloalkoxy group Chemical group 0.000 abstract 1
- 125000001188 haloalkyl group Chemical group 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 150000002825 nitriles Chemical class 0.000 abstract 1
- IBBMAWULFFBRKK-UHFFFAOYSA-N picolinamide Chemical compound NC(=O)C1=CC=CC=N1 IBBMAWULFFBRKK-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/84—Nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
- C07D213/803—Processes of preparation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/81—Amides; Imides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Pyridine Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1. Способ получения 4-амино-3-хлор-5-фтор-6-(замещенного)пиколината формулы Iв которойR представляет собой (C-C)алкил, циклопропил, (C-C)алкенил или фенил, содержащий от 1 до 4 заместителей, в качестве которых независимо выбирают галоген, (C-C)алкил, (C-C)галогеналкил, (C-C)алкокси или (C-C)галогеналкокси;Rпредставляет собой (C-C)алкил или незамещенный или замещенный (C-C)арилалкил;который включает следующие стадии:a) фторирование 3,4,5,6-тетрахлорпиколинонитрила (формула A)источником фторид-ионов для получения 3-хлор-4,5,6-трифторпиколинонитрила (формула B)b) аминирование 3-хлор-4,5,6-трифтор-2-пиколинонитрила (формула B) аммиаком для получения 4-амино-3-хлор-5,6-дифторпиколинонитрила (формула C)c) замещение фторзаместителя в положении 6 4-амино-3-хлор-5,6-дифторпиколинонитрила (формула C) с помощью бромоводорода (HBr), хлороводорода (HCl) или йодоводорода (HI) и гидролиз нитрила для получения 4-амино-3-хлор-5-фтор-6-галогенпиколинамида формулы Dв которой L представляет собой Br, Cl или I;d) этерификацию 4-амино-3-хлор-5-фтор-6-галогенпиколинамида формулы D сильной кислотой и спиртом (ROH) для получения 4-амино-3-хлор-5-фтор-6-галогенпиколината формулы Eв которой L и Rявляются такими, как определено выше; иe) сочетание 4-амино-3-хлор-5-фтор-6-галогенпиколината формулы E с арил-, алкил- или алкенилметаллоорганическим соединением формулы Fв которой R является таким, как определено выше, и Met представляет собой Zn-галогенид, Zn-R, три-((C-C)алкил)олово, медь, или B(OR)(OR), где Rи Rнезависимо друг от друга представляют собой водород или (C-C)алкил, или совместно образуют этиленовую или пропиленовую группу в присутствии содержащего переходный металл катализатора, для получения 4-амино-3-хлор-5-фтор-6-(
Claims (2)
1. Способ получения 4-амино-3-хлор-5-фтор-6-(замещенного)пиколината формулы I
в которой
R представляет собой (C1-C4)алкил, циклопропил, (C2-C4)алкенил или фенил, содержащий от 1 до 4 заместителей, в качестве которых независимо выбирают галоген, (C1-C4)алкил, (C1-C4)галогеналкил, (C1-C4)алкокси или (C1-C4)галогеналкокси;
R1 представляет собой (C1-C12)алкил или незамещенный или замещенный (C7-C11)арилалкил;
который включает следующие стадии:
a) фторирование 3,4,5,6-тетрахлорпиколинонитрила (формула A)
источником фторид-ионов для получения 3-хлор-4,5,6-трифторпиколинонитрила (формула B)
b) аминирование 3-хлор-4,5,6-трифтор-2-пиколинонитрила (формула B) аммиаком для получения 4-амино-3-хлор-5,6-дифторпиколинонитрила (формула C)
c) замещение фторзаместителя в положении 6 4-амино-3-хлор-5,6-дифторпиколинонитрила (формула C) с помощью бромоводорода (HBr), хлороводорода (HCl) или йодоводорода (HI) и гидролиз нитрила для получения 4-амино-3-хлор-5-фтор-6-галогенпиколинамида формулы D
в которой L представляет собой Br, Cl или I;
d) этерификацию 4-амино-3-хлор-5-фтор-6-галогенпиколинамида формулы D сильной кислотой и спиртом (R1OH) для получения 4-амино-3-хлор-5-фтор-6-галогенпиколината формулы E
в которой L и R1 являются такими, как определено выше; и
e) сочетание 4-амино-3-хлор-5-фтор-6-галогенпиколината формулы E с арил-, алкил- или алкенилметаллоорганическим соединением формулы F
в которой R является таким, как определено выше, и Met представляет собой Zn-галогенид, Zn-R, три-((C1-C4)алкил)олово, медь, или B(OR2)(OR3), где R2 и R3 независимо друг от друга представляют собой водород или (C1-C4)алкил, или совместно образуют этиленовую или пропиленовую группу в присутствии содержащего переходный металл катализатора, для получения 4-амино-3-хлор-5-фтор-6-(замещенного)пиколината формулы I.
2. Соединение формулы:
a)
в которой X и Y независимо представляют собой F или Cl;
b)
в которой X и Y независимо представляют собой F или Cl при том условии, что, по меньшей мере, один из X и Y представляет собой F;
c)
в которой W1 представляет собой F, Cl, Br или I;
d)
в которой W2 представляет собой Cl, Br или I; или
e)
в которой R1 представляет собой (C1-C12)алкил или незамещенный или замещенный (C7-C11)арилалкил, и W3 представляет собой Br или I.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161435966P | 2011-01-25 | 2011-01-25 | |
| US61/435,966 | 2011-01-25 | ||
| PCT/US2012/022285 WO2012103041A2 (en) | 2011-01-25 | 2012-01-24 | Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted) picolinates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2545021C1 RU2545021C1 (ru) | 2015-03-27 |
| RU2013139300A true RU2013139300A (ru) | 2015-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2013139300/04A RU2545021C1 (ru) | 2011-01-25 | 2012-01-24 | Способ получения 4-амино-3-хлор-5-фтор-6-(замещенных)пиколинатов |
Country Status (20)
| Country | Link |
|---|---|
| US (3) | US20120190857A1 (ru) |
| EP (1) | EP2668163B1 (ru) |
| JP (1) | JP5739018B2 (ru) |
| KR (1) | KR101537879B1 (ru) |
| CN (2) | CN103874685B (ru) |
| AR (1) | AR085022A1 (ru) |
| AU (1) | AU2012209277B2 (ru) |
| BR (2) | BR102012001636A2 (ru) |
| CA (1) | CA2825475C (ru) |
| CO (1) | CO6731125A2 (ru) |
| HK (2) | HK1199245A1 (ru) |
| IL (1) | IL227646A (ru) |
| MX (1) | MX342328B (ru) |
| PL (1) | PL2668163T3 (ru) |
| RU (1) | RU2545021C1 (ru) |
| SG (1) | SG192093A1 (ru) |
| TW (1) | TWI592401B (ru) |
| UA (1) | UA106945C2 (ru) |
| WO (1) | WO2012103041A2 (ru) |
| ZA (1) | ZA201305577B (ru) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI592401B (zh) | 2011-01-25 | 2017-07-21 | 陶氏農業科學公司 | 用於製備４－胺基－３－氯－５－氟－６－（經取代的）吡啶甲酸酯的方法（一） |
| US9637505B2 (en) | 2013-03-15 | 2017-05-02 | Dow Agrosciences Llc | 4-amino-6-(heterocyclic)picolinates and 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their use as herbicides |
| US9113629B2 (en) | 2013-03-15 | 2015-08-25 | Dow Agrosciences Llc | 4-amino-6-(4-substituted-phenyl)-picolinates and 6-amino-2-(4-substituted-phenyl)-pyrimidine-4-carboxylates and their use as herbicides |
| CN105208859A (zh) | 2013-03-15 | 2015-12-30 | 美国陶氏益农公司 | 作为除草剂的新型的4-氨基吡啶和6-氨基嘧啶羧酸酯 |
| CN109134440A (zh) | 2013-03-15 | 2019-01-04 | 美国陶氏益农公司 | 除草化合物及其作为除草剂的用途 |
| TW201609651A (zh) | 2013-11-12 | 2016-03-16 | 陶氏農業科學公司 | 用於氟化化合物之過程（一） |
| TW201609652A (zh) | 2013-11-12 | 2016-03-16 | 陶氏農業科學公司 | 用於氟化化合物之過程（三） |
| BR102014028164A2 (pt) * | 2013-11-12 | 2015-09-08 | Dow Agrosciences Llc | processo para fluoração de compostos |
| TWI726900B (zh) | 2015-08-04 | 2021-05-11 | 美商陶氏農業科學公司 | 用於氟化化合物之過程 |
| BR112018073348B8 (pt) * | 2016-05-19 | 2023-05-16 | Dow Agrosciences Llc | Métodos para preparar 6-aril-4-aminopicolinatos e 2-aril-6-aminopirimidina-4-carboxilatos por acoplamento direto de suzuki |
| CN107954925A (zh) * | 2016-10-18 | 2018-04-24 | 内蒙古佳瑞米精细化工有限公司 | 一种2,3-二氯-5-三氟甲基吡啶前杂的去除方法 |
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| BR112022018508A2 (pt) * | 2020-03-18 | 2022-10-25 | Corteva Agriscience Llc | Síntese melhorada de 4-amino-6-(heterocíclico)picolinatos |
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| US3629424A (en) * | 1967-12-26 | 1971-12-21 | Dow Chemical Co | Cyanofluoropyridines and fungicidal compositions and methods for using the same |
| US4336384A (en) * | 1981-04-23 | 1982-06-22 | The Dow Chemical Company | Preparation of 4-amino-3,5,6-trichloropicolinic acid |
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| GB201008290D0 (en) * | 2010-05-18 | 2010-06-30 | Syngenta Ltd | Chemical compounds |
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