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CN116813475A - 一种芳环化合物的卤化合成方法 - Google Patents

一种芳环化合物的卤化合成方法 Download PDF

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CN116813475A
CN116813475A CN202310786431.4A CN202310786431A CN116813475A CN 116813475 A CN116813475 A CN 116813475A CN 202310786431 A CN202310786431 A CN 202310786431A CN 116813475 A CN116813475 A CN 116813475A
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焦宁
宋颂
王伟琎
杨小雪
代荣恒
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Abstract

本发明公开了一种芳环化合物的卤化合成方法,该合成方法包括在催化剂(催化剂为磺酸)、卤化试剂、溶剂存在的条件下,对芳环化合物进行卤化反应,得到芳基卤化物。本发明在催化剂(催化剂为磺酸)、卤化试剂、溶剂存在的条件下,通过对芳环化合物进行高效卤化反应,能够以很高的活性和选择性得到非常有用的芳基卤化物。采用本发明的方法,能够高效合成芳基卤化物,在实际生产中将具有广泛的应用前景。

Description

一种芳环化合物的卤化合成方法
技术领域
本发明属于但不限于化学合成技术领域,尤其涉及一种磺酸催化的芳环化合物的卤化合成方法。
背景技术
在有机合成中,芳基卤化物是广泛存在于许多具有生物活性的天然产物中(Gribble,G.W.J.Chem.Edu.2004,81,1441),同时芳基卤化物作为重要的有机合成中间体,大大提高了有机合成的效率(Neilson,A.H.Ed.Organic Bromine and IodineCompounds.In the Handbook of Enviromental Chemistry,Springer,Heidelberg,Berlin,2003)。因此发展芳基卤化物的高效合成方法是当前学术界和工业界的热点研究领域之一(Dagani,M.J.;Barda,H.J.;Benya,T.J.;Sanders,D.C.Eds.Ullmann′sEncyclopedia of Industrial Chemistry:Bromine Compounds,Wiley-VCH,Weinheim,2002)。贫电子芳环由于带有不同的吸电子基团(Electron-withdrawing group,EWG),芳环的亲核性被显著地降低了。因此相比于富电子芳环和中等电性的芳环,贫电子的芳环的亲电卤化反应更具有挑战性。为了解决这一问题,化学家们百年来发展了很多的策略,但往往需要加入过量的强路易斯酸或磺酸作为活化试剂。如此苛刻的反应条件无疑会导致反应的选择性较差,产率较低,底物兼容性不足等问题,同时产生的大量酸性废弃物也与“绿色化学”的宗旨不相符合。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明的方法首次实现了催化的贫电子芳环的卤化反应。温和的反应条件,廉价的卤化试剂和极好的官能团兼容性使得本体系可以被用于多种天然产物和药物分子的后期修饰。
本发明提供了一种芳环化合物的卤化合成方法,解决了现有技术中存在的问题。
具体地,本发明提供了一种芳环化合物的卤化合成方法,包括:在催化剂、卤化试剂X-Y和溶剂存在的条件下,对芳环化合物进行卤化反应得到芳基卤化物;
这里,所述芳环化合物具有式(I)所示的结构,所述芳基卤化物具有式(II)所示的结构;其中表示芳基或杂芳基;R1,R2,R3,R4和R5中的至少一个选自共轭基团或吸电子基团,其余的基团分别独立选自氢、卤素、硝基、C1-5卤代烷基、羟基、芳基、杂芳基、氨基、C1-5烷基取代的单烷基氨基或二烷基氨基、苄基氨基、C1-14烷基、C1-5烷氧基、C1-5醛基或C1-5酯基;X选自氯、溴或碘;
所述催化剂为磺酸;
所述的卤化试剂为X-Y,其中,Y选自琥珀酰亚胺、咪唑烷基二酮、三聚氰酸、邻苯二甲酰亚胺、糖精、酰胺基、叔丁氧基、磺酰胺、脒;X选自氯、溴或碘;可选地,所述卤化试剂的结构为
所述溶剂是六氟异丙醇、三氟乙醇、三氟乙酸、硝基苯、硝基甲苯、硝基甲烷、硝基乙烷、硝基异丙烷、硝基正丙烷和硝基正丁烷中的一种或几种的混合物。
在一些优选实施方案中,所述的催化剂的分子结构式为R6-SO3H;其中R6选自氢、卤素、羟基、烷基、卤代烷基、烷氧基、苯甲氧基、酰氧基、酰基、酯基、酰胺基、单烷基氨基、二烷基氨基、芳基、取代的芳基、杂芳基或取代的杂芳基;
优选地,所述的催化剂为CF3SO3H、甲磺酸、苯磺酸、对硝基苯磺酸或邻硝基苯磺酸。
在一些优选实施方案中,其中,为苯、萘、蒽、吡唑、联萘酚、吲哚、氮杂吲哚、吡咯、四氢喹啉、N-苯基吗啉、花椒毒素、普萘洛尔、吉菲罗齐、萘普生、双氯芬酸、美他沙酮、氯吡格雷、氯霉唑、阿普斯特、普鲁卡因、苯并环己烷、2-甲基苯并环氧己烷、香草醛、罂粟碱、鬼臼毒素、鱼藤酮、青藤碱、苯并呋喃、嘌呤、噻吩、苯并噻吩、吲唑、吡唑、咪唑或咪唑并吡嗪;
优选地,为苯、吡啶、嘧啶、吡嗪、咪唑或吡唑;
R1,R2,R3,R4和R5分别独立选自氢、卤素、硝基、三氟甲基、羟基、苯基、氨基、C1-5烷基取代的单烷基氨基或二烷基氨基、苄基氨基、C1-14烷基、C1-5烷氧基、C1-5醛基或C1-5酯基。
在一些优选实施方案中,其中,所述的芳环化合物选自以下化合物中的任一种:氯贝特、非诺贝特、奥硝唑、甲硝唑、氟比洛芬、吡格列酮、卢非酰胺、阿塔鲁伦甲酯、比卡鲁胺、来氟米特、替硝唑、三氟甲苯、2,4-二氟苯甲酸、硝基苯、苯甲酸甲酯、苯甲酸、苯基甲基砜、氟苯、碘苯、对溴硝基苯、对硝基苄醇、对甲基硝基苯、对氯苯甲酸甲酯、对氟苯甲酸甲酯、对甲基苯磺酰胺、对碘苯甲醛、对溴三氟甲苯、对溴苯甲腈、3-氯苯甲酸、1,3-二氟苯、1,2-苯二甲酸二甲酯、2-氟苯甲腈、2-甲氧基吡啶、2,6-二甲氧基嘧啶、2-甲氧基吡嗪、对溴三氟甲苯、对氟苯甲酸、对氯苯甲醛和1,2,3-三氟苯。
在一些优选实施方案中,其中,所述卤化反应的反应温度为0~150℃,优选为60℃。
在一些优选实施方案中,其中,所述芳环化合物与卤化试剂的摩尔比为1∶(0.4~10)。
在一些优选实施方案中,其中,
对于氯化反应,卤化试剂为三氯异氰尿酸(TCCA),所述芳环化合物与卤化试剂的摩尔比为1∶0.4;
对于溴化反应,卤化试剂为二溴海因(DBDMH),所述芳环化合物与卤化试剂的摩尔比为1∶0.6;
对于碘化反应,卤化试剂为N-碘代丁二酰亚胺(NIS),所述芳环化合物与卤化试剂的摩尔比为1∶1.2。
在一些优选实施方案中,述芳环化合物与催化剂的摩尔比为1:(0.001~10),优选为1∶0.05。
在一些优选实施方案中,所述芳环化合物的浓度为0.001~10.0M,优选为0.5M。
在一些优选实施方案中,所述卤化反应的反应时间为0.1~72小时,优选为0.5~36小时,更优选为1~25小时。
本发明人将本发明的合成方法与文献中已有的芳环卤化方法进行了比较,结果如下:
TCCA:三氯异氰尿酸;DMSO:二甲基亚砜;NCS:N-氯代丁二酰亚胺;PIDA:碘苯二乙酸;m-NBSA:间硝基苯磺酸;NBS:N-溴代丁二酰亚胺。
当使用替硝唑、安塔鲁伦甲酯、氯贝特或者非诺贝特作为底物进行氯化或者溴化反应时,我们的催化体系能够以较好的收率得到目标产物,而其他文献中报导的反应体系如TCCA/H2SO4、DMSO/NCS、PIDA/HCl、PIDA/HBr、AuCl3/NBS等最高仅能得到30%的收率。
本发明在卤化试剂、催化剂和溶剂存在的条件下,通过对芳环化合物进行卤化反应,能够以很高的活性和选择性得到非常有用的芳基卤化物。采用本发明的方法,能够高效合成芳基卤化物,在实际生产中将具有广泛的应用前景。
本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书以及权利要求书中所特别指出的结构来实现和获得。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚明白,下文中将对本发明的实施例进行详细说明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互任意组合。
EI源质谱采用Agilent 7890GC System with an Agilent 5975 Mass SelectiveDetector记录,高分辨质谱采用PE SCLEX QSTAR spectrometer记录
核磁氢谱和核磁碳谱采用用Bruker AVIII-400光谱仪记录。
实例中所使用的试剂购自Acros,Aldrich Chemical Company或者百灵威等公司。
通过下述实施实例将有助于近一步理解本发明,但并不限制本发明内容。本发明的制备方法可进一步用代表化合物的制备过程体现如下:
实施例1:3-溴-4-甲基硝基苯的制备(化合物1)
a)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯203.1mg,产率94%。
b)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,3-硝基苯磺酸2.0mg,三氟乙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯95.1mg,产率44%。
c)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,甲磺酸1.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯86.4mg,产率40%。
d)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,三氟甲磺酸1.5mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯125.3mg,产率58%。
e)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,苯磺酸1.6mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯170.6mg,产率79%。
f)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,对硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯194.4mg,产率90%。
h)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,邻硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯164.1mg,产率76%。
i)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,N-溴代丁二酰亚胺213.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯69.1mg,产率32%。
j)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,N-溴代邻苯二甲酰亚胺271.2mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯75.6mg,产率35%。
k)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯213.8mg,产率99%。
1)取一25mL Schlenk反应管,加入4-甲基硝基苯1.37g,二溴海因1.72g,间硝基苯磺酸100mg,六氟异丙醇20mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯1.80g,产率85%。
m)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,二溴海因171.6mg,三氟甲磺酸15.0mg,硝基甲烷2mL,在120℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-甲基硝基苯198.7mg,产率92%。
1H NMR(400MHz,CDCl3)δ8.37(d,J=2.4Hz,1H),8.05(dd,J=8.3,2.4Hz,1H),7.39(d,J=8.4Hz,1H),2.49(s,3H).13C NMR(100MHz,CDCl3)δ146.5,145.8,131.0,127.3,124.9,122.1,23.2.MS(EI)m/z(%):63.0(59),89.0(100),168.9(35),214.9(M+,45),216.9(45,对于81Br).
实施例2:3-溴硝基苯的制备(化合物2)
取一25mL Schlenk反应管,加入硝基苯123.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴硝基苯107.1mg,产率53%。
1H NMR(400MHz,CDCl3)δ8.39(d,J=2.3Hz,1H),8.18(dd,J=8.3,2.1Hz,1H),7.91-7.74(m,1H),7.44(t,J=8.1Hz,1H).13C NMR(100MHz,CDCl3):δ148.8,137.6,130.6,126.8,122.9,122.1.MS(EI)m/z(%):75.0(100),154.9(90),156.9(85),200.9(M+,65),202.9(65,对于81Br).
实施例3:3-溴苯甲酸甲酯的制备(化合物3)
取一25mL Schlenk反应管,加入苯甲酸甲酯136.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴苯甲酸甲酯152.7mg,产率71%。
1H NMR(400MHz,CDCl3)δ8.15(t,J=1.8Hz,1H),7.94(dt,J=7.8,1.3Hz,1H),7.66(dd,J=7.9,2.1,1.1Hz,1H),7.29(t,J=7.9Hz,1H),3.90(s,3H).13C NMR(100MHz,CDCl3)δ165.6,135.8,132.5,132.0,129.9,128.1,122.4,52.3.MS(EI)m/z(%):76.1(90),154.9(60),182.9(100),213.9(M+,39),215.9(40,对于81Br).
实施例4:3-溴苯甲酸的制备(化合物4)
取一25mL Schlenk反应管,加入苯甲酸122.1mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴苯甲酸144.7mg,产率72%。
1H NMR(400MHz,DMSO-d6)δ13.30(brs,1H),8.03(t,J=1.8Hz,1H),7.92(dt,J=7.8,1.3Hz,1H),7.82-7.77(m,1H),7.45(t,J=7.9Hz,1H).13C NMR(100MHz,DMSO-d6)δ166.0,135.5,133.1,131.8,130.8,128.3,121.7.MS(EI)m/z(%):50.2(100),155.2(15),182.8(30),199.8(M+,25),201.8(25,对于81Br).
实施例5:3-溴苯基甲基砜的制备(化合物5)
取一25mL Schlenk反应管,加入苯基甲基砜156.2mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴苯基甲基砜94.0mg,产率40%。
1H NMR(400MHz,CDCl3)δ8.07(s,1H),7.87(d,J=7.8Hz,1H),7.76(d,J=7.9Hz,1H),7.45(t,J=7.9Hz,1H),3.06(s,3H).13C NMR(100MHz,CDCl3)δ142.3,136.7,130.9,130.3,125.9,123.2,44.4.MS(EI)m/z(%):154.9(100),156.9(100),233.9(M+,45),235.9(45,对于81Br).
实施例6:4-溴氟苯的制备(化合物6)
取一25mL Schlenk反应管,加入氟苯96.1mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到4-溴氟苯157.5mg,产率90%。
1H NMR(400MHz,CDCl3)δ7.44(dd,J=8.8,4.9Hz,2H),6.99-6.90(m,2H).13C NMR(100MHz,CDCl3)δ161.8(d,J=246.5Hz),132.9(d,J=8.1Hz),117.2(d,J=22.7Hz),116.5(d,J=3.3Hz).19F NMR(376MHz,CDCl3)δ-115.3.MS(EI)m/z(%):75.1(50),94.9(85),173.9(M+,100),175.9(100,对于81Br).
实施例7:4-溴碘苯的制备(化合物7)
取一25mL Schlenk反应管,加入碘苯204.0mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到4-溴碘苯229.1mg,产率81%。
1H NMR(400MHz,CDCl3)δ7.54(d,J=8.6Hz,2H),7.22(d,J=8.6Hz,2H).13C NMR(100MHz,CDCl3)δ139.0,133.4,122.2,92.0.MS(EI)m/z(%):126.9(35),154.9(75),156.9(75),281.8(M+,100),283.8(100,对于81Br).
实施例8:3,4-二溴硝基苯的制备(化合物8)
取一25mL Schlenk反应管,加入4-溴硝基苯202.0mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3,4-二溴硝基苯89.9mg,产率32%。
1H NMR(400MHz,CDCl3)δ8.45(d,J=2.6Hz,1H),8.02(dd,J=8.8,2.6Hz,1H),7.81(d,J=8.8Hz,1H).13C NMR(100MHz,CDCl3)δ147.1,134.2,132.6,128.4,125.7,123.0.MS(EI)m/z(%):74.1(100),153.7(15),222.9(30),278.9(M+,10),280.9(20,对于81Br),282.9(8,对于81Br).
实施例9:2-溴-4-硝基苄醇的制备(化合物9)
取一25mL Schlenk反应管,加入4-硝基苄醇153.1mg,二溴海因171.6mg,间硝基苯磺酸4.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-溴-4-硝基苄醇92.8mg,产率40%。
1H NMR(400MHz,CDCl3)δ8.40(d,J=2.3Hz,1H),8.21(dd,J=8.5,2.2Hz,1H),7.76(d,J=8.5Hz,1H),4.83(d,J=5.5Hz,2H),2.19(t,J=5.8Hz,1H).13C NMR(100MHz,CDCl3)δ147.5,147.1,128.2,127.4,122.5,121.6,64.2.MS(EI)m/z(%):77.0(100),152.0(100),184.9(15),230.8(M+,15),232.9(15,对于81Br).
实施例10:4-乙基-3-溴硝基苯的制备(化合物10)
取一25mL Schlenk反应管,加入4-乙基硝基苯151.2mg,二溴海因171.6mg,间硝基苯磺酸4.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-溴-4-硝基苄醇220.9mg,产率96%。
1H NMR(400MHz,CDCl3)δ8.40(d,J=2.3Hz,1H),8.10(dd,J=8.4,2.4Hz,1H),7.40(d,J=8.5Hz,1H),2.85(q,J=7.5Hz,2H),1.27(t,J=7.5Hz,3H).13C NMR(100MHz,CDCl3)δ151.0,146.5,129.7,127.8,124.3,122.5,29.6,13.7.MS(EI)m/z(%):51.1(59),77.1(100),103.1(77),229.0(M+,50),231.0(50,对于81Br).
实施例11:4-异丙基-3-溴硝基苯的制备(化合物11)
取一25mL Schlenk反应管,加入4-异丙基硝基苯165.2mg,二溴海因171.6mg,间硝基苯磺酸4.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到4-异丙基-3-溴硝基苯197.7mg,产率81%。
1H NMR(400MHz,CDCl3)δ8.41(d,J=2.4Hz,1H),8.13(dd,J=8.6,2.4Hz,1H),7.44(d,J=8.6Hz,1H),3.49-3.41(m,1H),1.28(d,J=6.8Hz,6H).13C NMR(100MHz,CDCl3)δ155.0,146.3,127.9,127.1,124.2,122.6,33.3,22.5.MS(EI)m/z(%):51.1(22),102.1(42),228.0(100),243.0(M+,38),245.0(35,for81Br).
实施例12:3-溴-4-氯苯甲酸甲酯的制备(化合物12)
取一25mL Schlenk反应管,加入4-氯苯甲酸甲酯170.6mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-氯苯甲酸甲酯212.0mg,产率85%。
1H NMR(400MHz,CDCl3)δ8.24(d,J=2.0Hz,1H),7.87(dd,J=8.4,2.0Hz,1H),7.49(d,J=8.3Hz,1H),3.92(s,3H).13C NMR(100MHz,CDCl3)δ164.7,139.3,134.6,130.1,129.8,129.1,122.4,52.4.MS(EI)m/z(%):74.0(100),110.0(38),218.9(53),247.9(M+,15),249.9(15,对于81Br).
实施例13:3-溴-4-氟苯甲酸甲酯的制备(化合物13)
取一25mL Schlenk反应管,加入4-氟苯甲酸甲酯154.1mg,二溴海因171.6mg,间硝基苯磺酸4.0mg,六氟异丙醇2mL,在60℃下搅拌20小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-氟苯甲酸甲酯212.0mg,产率91%。
1H NMR(400MHz,CDCl3)δ8.21(dd,J=6.8,2.1Hz,1H),7.94(dd,J=8.7,4.8Hz,1H),7.13(t,J=8.3Hz,1H),3.89(s,3H).13C NMR(100MHz,CDCl3)δ164.83,161.90(d,J=254.7Hz),135.23(d,J=2.0Hz),130.66(d,J=8.3Hz),127.58(d,J=3.6Hz),116.35(d,J=23.0Hz),109.15(d,J=21.5Hz),52.37.19F NMR(376MHz,CDCl3)δ-100.0.HRMS(ESI)计算值[C8H5BrFO2,M-H]-:230.9431,实测:230.9431,232.9411(对于81Br).
实施例14:3-溴-4-氯苯甲酸乙酯的制备(化合物14)
取一25mL Schlenk反应管,加入4-氯苯甲酸乙酯184.6mg,二溴海因171.6mg,间硝基苯磺酸4.0mg,六氟异丙醇2mL,在60℃下搅拌14小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-氯苯甲酸乙酯245.1mg,产率93%。
1H NMR(400MHz,CDCl3)δ8.28(d,J=2.0Hz,1H),7.91(dd,J=8.4,2.0Hz,1H),7.52(d,J=8.3Hz,1H),4.38(q,J=7.1Hz,2H),1.40(t,J=7.1Hz,3H).13C NMR(100MHz,CDCl3)δ164.6,139.4,134.8,130.35,130.29,129.3,122.6,61.6,14.3.MS(EI)m/z(%):190.8(45),218.9(100),235.9(50),261.9(M+,20),263.9(20,对于81Br).
实施例15:3-溴-4-甲基苯磺酰胺的制备(化合物15)
取一25mL Schlenk反应管,加入4-甲基苯磺酰胺171.2mg,二溴海因171.6mg,间硝基苯磺酸4.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-氟苯甲酸甲酯215.1mg,产率86%。
1H NMR(400MHz,DMSO-d6)δ8.05-8.02(m,1H),7.78-7.73(m,1H),7.53(d,J=8.0Hz,1H),7.48(s,2H),2.40(s,3H).13C NMR(100MHz,DMSO-d6)δ143.4,141.6,131.5,129.2,124.8,124.1,22.5.MS(EI)m/z(%):64.1(84),80.2(100),170.9(20),249.0(M+,13),251.0(10,对于81Br).
实施例16:3-溴-4-碘苯甲醛的制备(化合物16)
取一25mL Schlenk反应管,加入4-碘苯甲醛232.0mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌4小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴-4-碘苯甲醛139.9mg,产率45%。
1H NMR(400MHz,CDCl3)δ9.89(s,1H),8.05-8.02(m,2H),7.45(dd,J=8.1,1.9Hz,1H).13C NMR(100MHz,CDCl3)δ190.0,141.1,137.2,133.0,130.9,128.4,109.8.MS(EI)m/z(%):50.1(28),74.1(83),127.0(100),309.8(M+,23),311.9(20,对于81Br).
实施例17:3,4-二溴三氟甲苯的制备(化合物17)
取一25mL Schlenk反应管,加入4-溴三氟甲苯225.0mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3,4-二溴三氟甲苯243.1mg,产率80%。
1H NMR(400MHz,CDCl3)δ7.86(d,J=2.0Hz,1H),7.73(d,J=8.4Hz,1H),7.40(dd,J=8.4,2.1Hz,1H).13C NMR(100MHz,CDCl3)δ134.12,130.96(q,J=33.7Hz),130.55(q,J=3.9Hz),129.14(q,J=1.8Hz),125.48,125.13(q,J=3.7Hz),122.87(q,J=270.8Hz).19FNMR(376MHz,CDCl3)δ-62.9.MS(EI)m/z(%):50.2(29),69.0(100),124.8(100),301.9(M+,17),303.9(15,对于81Br).
实施例18:3,4-二溴苯甲腈的制备(化合物18)
取一25mL Schlenk反应管,加入4-溴苯甲腈182.0mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3,4-二溴苯甲腈133.1mg,产率51%。
1H NMR(400MHz,CDCl3)δ7.95-7.87(m,1H),7.75(dd,J=8.3,1.0Hz,1H),7.52-7.41(m,1H).13C NMR(100MHz,CDCl3)δ136.6,134.5,131.4,130.9,125.9,116.7,112.7.MS(EI)m/z(%):179.9(40),288.8(M+,50),260.8(100,对于81Br),262.8(50,对于81Br).
实施例19:2-溴-5-氯苯甲酸的制备(化合物19)
取一25mL Schlenk反应管,加入3-氯苯甲酸156.6mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌5小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-溴-5-氯苯甲酸155.4mg,产率66%。
1H NMR(400MHz,DMSO-d6)δ13.80(brs,1H),7.92(d,J=2.4Hz,1H),7.73(dd,J=8.5,2.5Hz,1H),7.51(d,J=8.5Hz,1H).13C NMR(100MHz,DMSO-d6)δ165.4,135.2,133.4,133.1,132.6,131.0,119.9.HRMS(ESI)计算值[C7H3BrClO2,M-H]-:234.8986,实测:234.8986,236.8966(对于81Br).
实施例20:2,4-二氟溴苯的制备(化合物20)
取一25mL Schlenk反应管,加入1,3-二氟苯114.1mg,二溴海因171.6mg,间硝基苯磺酸2.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2,4-二氟溴苯191.1mg,产率99%。
1H NMR(400MHz,CDCl3)δ7.56-7.45(m,1H),6.90(td,J=8.6,3.2Hz,1H),6.81(dd,J=8.8,5.7Hz,1H).13C NMR(100MHz,CDCl3)δ162.1(dd,J=249.6,10.5Hz),159.2(dd,J=249.6,10.5Hz),133.8(dd,J=9.2,1.8Hz),112.7(dd,J=22.4,4.0Hz),105.2(t,J=26.2Hz),103.7(dd,J=20.9,4.4Hz).19F NMR(376MHz,CDCl3)δ-102.5,-110.6.MS(EI)m/z(%):63.0(40),113.0(80),191.9(M+,100),193.9(100,对于81Br).
实施例21:3-溴苯二甲酸二甲酯的制备(化合物21)
取一25mL Schlenk反应管,加入苯二甲酸二甲酯194.2mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌14小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-溴苯二甲酸二甲酯125.6mg,产率46%。
1H NMR(400MHz,CDCl3)δ7.83(d,J=1.9Hz,1H),7.66(dd,J=8.1,1.9Hz,1H),7.62(d,J=8.3Hz,1H),3.91(s,3H),3.89(s,3H).13C NMR(100MHz,CDCl3)δ167.0,166.8,134.0,133.9,131.8,130.5,130.2,125.8,52.9,52.8.MS(EI)m/z(%):63.0(30),113.0(60),272.0(M+,100),274.0(100,对于81Br).
实施例22:2-碘-5-溴三氟甲苯的制备(化合物22)
取一25mL Schlenk反应管,加入2-碘三氟甲苯272.0mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌1小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-碘-5-溴三氟甲苯256.2mg,产率73%。
1H NMR(400MHz,CDCl3)δ7.84(d,J=8.4Hz,1H),7.75(d,J=2.7Hz,1H),7.31(d,J=8.4Hz,1H).13C NMR(100MHz,CDCl3)δ143.2,135.9,135.2(q,J=31.5Hz),130.7(q,J=5.8Hz),122.3,121.8(q,J=274.6Hz),89.0.19F NMR(376MHz,CDCl3)δ-63.2.MS(EI)m/z(%):69.0(19),126.9(100),223.0(15),349.9(M+,16),351.8(15,对于81Br).
实施例23:2-氟-5-溴苯甲腈的制备(化合物23)
取一25mL Schlenk反应管,加入2-氟苯甲腈121.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-氟-5-溴苯甲腈99.3mg,产率82%。
1H NMR(400MHz,CDCl3)δ7.79-7.66(m,2H),7.13(t,J=8.6Hz,1H).13C NMR(100MHz,CDCl3)δ162.1(d,J=260.1Hz),138.1(d,J=8.1Hz),135.7,118.2(d,J=20.9Hz),117.0(d,J=3.8Hz),112.4,103.4(d,J=16.8Hz).19F NMR(376MHz,CDCl3)δ-108.2.MS(EI)m/z(%):100.0(45),120.0(85),198.9(M+,100),200.9(100,对于81Br).
实施例24:2-溴-9H-芴酮的制备(化合物24)
取一25mL Schlenk反应管,加入芴酮180.2mg,二溴海因171.6mg,间硝基苯磺酸4.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-溴-9H-芴酮139.9mg,产率54%。
1H NMR(400MHz,CDCl3)δ7.71(s,1H),7.62(d,J=7.4Hz,1H),7.57(d,J=8.2Hz,1H),7.52-7.42(m,2H),7.39-7.25(m,2H).13C NMR(100MHz,CDCl3)δ192.2,143.5,142.9,137.0,135.6,134.9,133.6,129.3,127.4,124.5,122.8,121.6,120.4.MS(EI)m/z(%):75.1(25),151.0(90),231.9(10),257.9(M+,100),259.9(100,对于81Br).
实施例25:2-甲氧基-5-溴吡啶的制备(化合物25)
取一25mL Schlenk反应管,加入2-甲氧基吡啶109.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-甲氧基-5-溴吡啶126.0mg,产率67%。
1H NMR(400MHz,CDCl3)δ8.23-8.12(m,1H),7.62(dd,J=8.8,1.2Hz,1H),6.64(dd,J=8.8,1.2Hz,1H),3.89(s,3H).13C NMR(100MHz,CDCl3)δ162.9,147.5,141.0,112.6,111.6,53.7.MS(EI)m/z(%):156.9(65),158.9(65),186.9(M+,100),188.9(100,对于81Br).
实施例26:5-溴-2,4-二甲氧基嘧啶的制备(化合物26)
取一25mL Schlenk反应管,加入2,4-二甲氧基嘧啶140.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到5-溴-2,4-二甲氧基嘧啶162.1mg,产率74%。
1H NMR(400MHz,CDCl3)δ8.26(s,1H),4.01(s,3H),3.94(s,3H).13C NMR(100MHz,CDCl3)δ166.7,164.2,159.1,98.0,55.2,54.8.MS(EI)m/z(%):202.9(40),204.9(40),217.9(M+,100),219.9(100,对于81Br).
实施例27:2-溴-5-甲氧基吡嗪的制备(化合物28)
取一25mL Schlenk反应管,加入2-甲氧基吡嗪110.1mg,二溴海因171.6mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-溴-5-甲氧基吡嗪79.4mg,产率42%。
1H NMR(400MHz,CDCl3)δ8.18(d,J=1.3Hz,1H),8.01(d,J=1.3Hz,1H),3.95(s,3H).13C NMR(100MHz,CDCl3)δ159.9,142.8,135.3,130.1,54.2.MS(EI)m/z(%):157.9(35),159.9(35),187.9(M+,100),189.9(100,对于81Br).
芳烃的溴化a
HFIP:六氟异丙醇。
a反应条件:底物(1.0mmol),DBDMH(0.60mmol),m-NBSA(0.01mmol),HFIP(2.0mL),60℃.分离收率。b使用5mol%m-NBSA。c报告了NMR收率。d使用2mol%m-NBSA。
实施例28:4-碘氟苯的制备(化合物34)
取一25mL Schlenk反应管,加入氟苯96.1mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到4-碘氟苯210.9mg,产率95%。
1H NMR(400MHz,CDCl3)δ7.73-7.58(m,2H),6.84(t,J=8.7Hz,2H).13C NMR(100MHz,CDCl3)δ162.7(d,J=247.6Hz),138.9(d,J=7.7Hz),117.7(d,J=22.0Hz),86.9(d,J=3.3Hz).19F NMR(376MHz,CDCl3)δ-114.3.MS(EI)m/z(%):75.0(70),95.0(100),126.9(20),221.9(M+,100).
实施例29:3-碘三氟甲苯的制备(化合物36)
取一25mL Schlenk反应管,加入三氟甲苯146.1mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-碘三氟甲苯231.2mg,产率85%。
1H NMR(400MHz,CDCl3)δ7.97(s,1H),7.89(d,J=8.1Hz,1H),7.60(d,J=7.9Hz,1H),7.23(t,J=7.9Hz,1H).13C NMR(100MHz,CDCl3)δ140.9(d,J=1.5Hz),134.2(q,J=4.0Hz),132.4(q,J=32.8Hz),130.4,124.5(q,J=3.7Hz),122.9(q,J=272.7Hz),93.8.19FNMR(376MHz,CDCl3)δ-62.9.MS(EI)m/z(%):125.0(10),145.0(80),252.9(20),271.9(M+,100).
实施例30:3-碘苯甲酸的制备(化合物39)
取一25mL Schlenk反应管,加入苯甲酸122.1mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-碘苯甲酸178.6mg,产率72%。
1H NMR(400MHz,DMSO-d6)δ13.24(brs,1H),8.23(t,J=1.7Hz,1H),7.97-7.93(m,2H),7.29(t,J=7.8Hz,1H).13C NMR(100MHz,DMSO-d6)δ165.9,141.3,137.6,132.9,130.7,128.6,94.6.MS(EI)m/z(%):51.1(10),76.1(32),127.0(100),248.0(M+,8).
实施例31:3-碘苯甲酸甲酯的制备(化合物40)
取一25mL Schlenk反应管,加入苯甲酸甲酯136.2mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌10小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-碘苯甲酸甲酯230.6mg,产率88%。
1H NMR(400MHz,CDCl3)δ8.35(t,J=1.8Hz,1H),7.97(dt,J=7.9,1.4Hz,1H),7.85(dd,J=7.9,1.9Hz,1H),7.16(t,J=7.8Hz,1H),3.90(s,3H).13C NMR(100MHz,CDCl3)δ165.5,141.6,138.4,131.9,130.0,128.6,93.7,52.3.MS(EI)m/z(%):76.1(80),127.0(69),230.9(53),263.0(M+,94).
实施例32:3-碘-4-甲基硝基苯的制备(化合物41)
取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌22小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-碘-4-甲基硝基苯210.4mg,产率80%。
1H NMR(400MHz,CDCl3)δ8.63(d,J=2.4Hz,1H),8.10(dd,J=8.4,2.4Hz,1H),7.38(d,J=8.4Hz,1H),2.53(s,3H).13C NMR(100MHz,CDCl3)δ149.3,146.2,133.8,129.7,123.0,99.9,28.3.MS(EI)m/z(%):51.0(22),89.1(58),126.9(100),263.9(M+,48).
实施例33:3-碘-4-溴三氟甲苯的制备(化合物44)
取一25mL Schlenk反应管,加入4-溴三氟甲苯225.0mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-碘-4-溴三氟甲苯140.4mg,产率40%。
1H NMR(400MHz,CDCl3)δ8.09(s,1H),7.72(d,J=8.3Hz,1H),7.45(dd,J=8.5,2.0Hz,1H).13C NMR(100MHz,CDCl3)δ137.0(q,J=3.8Hz),134.0(q,J=1.5Hz),132.9,130.6(q,J=33.3Hz),126.1(q,J=3.6Hz),122.6(q,J=272.8Hz),101.4.19F NMR(376MHz,CDCl3)δ-62.8.MS(EI)m/z(%):74.1(30),126.9(100),223.0(15),349.9(M+,20),351.8(20,对于81Br).
实施例34:2,4-二氟碘苯的制备(化合物45)
取一25mL Schlenk反应管,加入1,3-二氟苯114.1mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2,4-二氟碘苯168.1mg,产率70%。
1H NMR(400MHz,CDCl3)δ7.76-7.65(m,1H),6.90-6.80(m,1H),6.76-6.66(m,1H).13C NMR(100MHz,CDCl3)δ165.0-162.8(m),162.5-160.4(m),139.6(dd,J=9.2,2.9Hz),113.4(dd,J=22.0,3.7Hz),104.5(dd,J=27.7,25.9Hz),74.6(dd,J=25.9,4.2Hz).19FNMR(376MHz,CDCl3)δ-89.3,-109.7.MS(EI)m/z(%):63.0(80),113.0(90),126.9(20),239.9(M+,100).
实施例35:2-甲基-5-碘硝基苯的制备(化合物46)
取一25mL Schlenk反应管,加入2-甲基硝基苯137.1mg,N-碘丁二酰亚胺270.0mg,间硝基苯磺酸10.0mg,六氟异丙醇2mL,在60℃下搅拌17小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2-甲基-5-碘硝基苯142.0mg,产率54%。
1H NMR(400MHz,CDCl3)δ8.27(d,J=1.8Hz,1H),7.80(dd,J=8.1,1.8Hz,1H),7.08(dd,J=8.1,0.9Hz,1H),2.54(s,3H).13C NMR(100MHz,CDCl3)δ149.5,141.7,134.2,133.1,89.7,20.0.MS(EI)m/z(%):89.0(100),126.9(35),245.9(100),262.9(M+,40).
实施例36:4-氯氟苯的制备(化合物49)
取一25mL Schlenk反应管,加入氟苯96.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌10小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到4-氯氟苯122.7mg,产率94%。
1H NMR(400MHz,CDCl3)δ7.35-7.26(m,2H),7.05-6.95(m,2H).13C NMR(100MHz,CDCl3)δ161.3(d,J=245.8Hz),129.9(d,J=8.4Hz),129.1(d,J=3.3Hz),116.7(d,J=23.1Hz).19F NMR(376MHz,CDCl3)δ-115.9.MS(EI)m/z(%):84.0(30),95.0(50),130.0(M+,100),132.0(35,对于37Cl).
实施例37:3-氯-4-甲基硝基苯的制备(化合物50)
a)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯157.9mg,产率92%。
b)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,三氟乙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯51.5mg,产率30%。
c)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,硝基甲烷2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯46.3mg,产率27%。
d)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,硝基正丙烷2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯20.6mg,产率12%。
e)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,间硝基苯磺酸40.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯73.8mg,产率43%。
f)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,邻硝基苯磺酸40.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯54.9mg,产率32%。
g)取一25mL Schlenk反应管,加入4-甲基硝基苯137.1mg,三氯异腈尿酸93.0mg,对硝基苯磺酸40.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-甲基硝基苯73.6mg,产率43%。
1H NMR(400MHz,CDCl3)δ8.23(d,J=2.2Hz,1H),8.03(dd,J=8.4,2.3Hz,1H),7.40(d,J=8.4Hz,1H),2.48(s,3H).13C NMR(100MHz,CDCl3)δ146.7,144.0,135.2,131.3,124.2,121.6,20.4.MS(EI)m/z(%):63.0(60),89.0(100),125.0(60),171.0(M+,60),173.0(20,对于37Cl).
实施例38:3-氯-4-溴硝基苯的制备(化合物51)
取一25mL Schlenk反应管,加入4-溴硝基苯202.0mg,三氯异腈尿酸93.0mg,三氟甲磺酸30.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-溴硝基苯118.2mg,产率50%。
1H NMR(400MHz,CDCl3)δ8.33(d,J=2.5Hz,1H),8.00(dd,J=8.8,2.6Hz,1H),7.83(d,J=8.8Hz,1H).13C NMR(100MHz,CDCl3)δ147.3,135.9,134.4,130.3,125.2,122.5.MS(EI)m/z(%):74.0(100),110.0(75),190.9(80),234.9(M+,60),236.9(100,对于81Br),238.9(30,对于37Cl and81Br).
实施例39:3-氯-4-氟苯甲酸的制备(化合物52)
取一25mL Schlenk反应管,加入4-氟苯甲酸140.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸30.0mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-氟苯甲酸113.5mg,产率65%。
1H NMR(400MHz,DMSO-d6)δ13.42(brs,1H),8.06(dd,J=7.3,2.1Hz,1H),7.96(dd,J=8.7,4.8Hz,1H),7.55(t,J=8.8Hz,1H).13C NMR(100MHz,DMSO-d6)δ165.4,160.0(d,J=253.1Hz),131.6,130.5(d,J=8.7Hz),128.7(d,J=3.6Hz),120.0(d,J=17.9Hz),117.3(d,J=21.5Hz).19F NMR(376MHz,DMSO-d6)δ-110.0.MS(EI)m/z(%):94.0(20),129.0(55),157.0(100),174.0(M+,65),176.0(20,对于37Cl).
实施例40:3,4-二氯苯甲酸甲酯的制备(化合物53)
取一25mL Schlenk反应管,加入4-氯苯甲酸甲酯170.6mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3,4-二氯苯甲酸甲酯184.5mg,产率90%。
1H NMR(400MHz,CDCl3,)δ8.09(d,J=2.0Hz,1H),7.84(dd,J=8.3,2.0Hz,1H),7.50(d,J=8.4Hz,1H),3.92(s,3H).13C NMR(100MHz,CDCl3)δ165.1,137.5,132.8,131.4,130.4,129.8,128.5,52.5.MS(EI)m/z(%):109.0(25),145.0(40),173.0(100),204.0(M+,30),226.0(10,对于37Cl).
实施例41:3-氯-4-碘三氟甲苯的制备(化合物55)
取一25mL Schlenk反应管,加入4-碘三氟甲苯272.0mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3-氯-4-碘三氟甲苯260.5mg,产率85%。
1H NMR(400MHz,CDCl3,)δ7.98(d,J=8.3Hz,1H),7.68(d,J=2.4Hz,1H),7.19(dd,J=8.3,2.3Hz,1H).13C NMR(100MHz,CDCl3)δ140.9,139.5,132.1(q,J=33.4Hz),126.0(q,J=3.8Hz),124.4(q,J=3.5Hz),123.1(q,J=272.5Hz),102.8.19F NMR(376MHz,CDCl3)δ-63.1.MS(EI)m/z(%):75.0(25),144.0(25),179.0(55),306.0(M+,100),308.0(30,对于37Cl).
实施例42:3,4-二氯苯甲醛的制备(化合物56)
取一25mL Schlenk反应管,加入4-氯苯甲醛140.6mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到3,4-二氯苯甲醛112.0mg,产率64%。
1H NMR(400MHz,CDCl3,)δ9.95(s,1H),7.95(d,J=2.0Hz,1H),7.72(dd,J=8.2,1.9Hz,1H),7.63(d,J=8.3Hz,1H).13C NMR(100MHz,CDCl3)δ189.6,139.0,135.7,133.9,131.2,131.1,128.3.MS(EI)m/z(%):75.0(45),111.0(25),145.0(45),174.0(M+,100),176.0(30,对于37Cl).
实施例43:1-氯-2,4-二氟苯的制备(化合物57)
取一25mL Schlenk反应管,加入1,3-二氟苯114.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌14小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到1-氯-2,4-二氟苯92.1mg,产率64%。
1H NMR(400MHz,CDCl3)δ7.62-7.53(m,2H),7.23-7.14(m,1H).13C NMR(100MHz,CDCl3)δ161.6(d,J=259.7Hz),135.1(d,J=8.1Hz),132.8,130.1(d,J=3.7Hz),117.9(d,J=20.9Hz),112.6,102.9(d,J=17.2Hz).19F NMR(376MHz,CDCl3)δ-108.8.MS(EI)m/z(%):100.0(10),120.0(20),155.0(M+,100),157.0(35,对于37Cl).
实施例44:2,3,4-三氟氯苯的制备(化合物59)
取一25mL Schlenk反应管,加入1,2,3-三氟苯132.1mg,三氯异腈尿酸93.0mg,三氟甲磺酸7.5mg,六氟异丙醇2mL,在60℃下搅拌20小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到2,3,4-三氟氯苯141.5mg,产率85%。
1H NMR(400MHz,CDCl3)δ7.19-7.09(m,1H),7.00-6.89(m,1H).13C NMR(100MHz,CDCl3)δ151.7-148.5(m),149.6-146.4(m),140.8(dt,J=254.9,15.6Hz),123.9(dd,J=7.5,4.2Hz),117.8(dd,J=14.9,4.2Hz),112.2(dd,J=18.5,4.2Hz).19F NMR(376MHz,CDCl3)δ-133.4,-135.0,-156.0.MS(EI)m/z(%):81.0(35),131.0(30),165.9(M+,100),167.9(35,对于37Cl).
芳烃的氯化和碘化a
TfOH:三氟甲磺酸。
a对于氯化,反应条件:底物(1.0mmol),TCCA(0.40mmol),TfOH(0.05mmol),HFIP(2.0mL),60℃;对于碘化,反应条件:底物(1.0mmol),NIS(1.2mmol),m-NBSA(0.05mmol),HFIP(2mL),60℃.分离收率.b报告了NMR收率.c使用20mol%TfOH作为催化剂。
实施例45:溴代氯贝特的制备(化合物60)
取一25mL Schlenk反应管,加入氯贝特121.4mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代氯贝特153.4mg,产率96%。
1H NMR(400MHz,CDCl3)7.52(d,J=2.6Hz,1H),7.13(dd,J=8.8,2.6Hz,1H),6.80(d,J=8.9Hz,1H),4.23(q,J=7.2Hz,2H),1.59(s,6H),1.25(t,J=7.1Hz,3H).13C NMR(100MHz,CDCl3)δ173.6,151.4,132.9,127.8,120.0,116.7,81.2,77.3,77.0,76.7,61.5,25.0,14.0.HRMS(ESI)计算值[C12H15BrClO3,M+H]+:320.9893,实测:320.9887,322.9856(对于81Br).
实施例46:溴代非诺贝特的制备(化合物61)
取一25mL Schlenk反应管,加入非诺贝特180.4mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代非诺贝特186.9mg,产率85%。
1H NMR(400MHz,CDCl3)δ8.01(d,J=2.2Hz,1H),7.69-7.61(m,3H),7.43(d,J=8.5Hz,2H),6.81(d,J=8.6Hz,1H),5.12-5.01(m,1H),1.68(s,6H),1.20(d,J=6.3Hz,6H).13C NMR(100MHz,CDCl3)δ192.8,172.5,156.3,138.7,135.7,135.4,131.4,131.0,130.1,128.6,116.5,114.8,81.0,77.3,77.0,76.7,69.4,25.2,21.4.HRMS(ESI)计算值[C20H21O4ClBr,M+H]+:439.0312,实测:439.0314,441.0294(对于81Br).
实施例47:溴代奥硝唑的制备(化合物62)
取一25mL Schlenk反应管,加入奥硝唑109.8mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代奥硝唑110.5mg,产率74%。
1H NMR(400MHz,CDCl3)δ4.57(d,J=5.1Hz,1H),4.47-4.41(m,1H),4.24(dd,J=14.5,2.7Hz,1H),4.10-3.98(m,1H),3.74(d,J=5.3Hz,2H),2.51(s,3H).13C NMR(100MHz,CDCl3)δ147.0,143.3,104.9,69.1,50.1,46.2,14.6.HRMS(ESI)计算值[C7H10N3O3VlBr,M+H]+:297.9594,实测:297.9593,299.9571(对于81Br).
实施例48:溴代甲硝唑的制备(化合物63)
取一25mL Schlenk反应管,加入甲硝唑85.6mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代甲硝唑110.0mg,产率88%。
1H NMR(400MHz,DMSO-d6)δ5.08(brs,1H),4.11(t,J=5.4Hz,2H),3.69(t,J=5.4Hz,2H),2.45(s,3H).13C NMR(100MHz,DMSO-d6)δ146.3,143.1,106.6,58.9,48.6,13.9.HRMS(ESI)计算值[C6H9N3O3Br],M+H]+:249.9827,实测:249.9827,251.9807(对于81Br).
实施例49:溴代氟比洛芬的制备(化合物64)
取一25mL Schlenk反应管,加入氟比洛芬122.1mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代氟比洛芬109.9mg,产率68%。
1H NMR(400MHz,CDCl3)δ10.98(brs,1H),7.57(d,J=8.2Hz,2H),7.43-7.33(m,3H),7.21-7.10(m,2H),3.79(q,J=7.1Hz,1H),1.56(d,J=7.2Hz,3H).13C NMR(100MHz,CDCl3)δ179.7,159.5(d,J=248.9Hz),141.5(d,J=7.6Hz),134.2,131.6,130.6,130.48(d,J=3.2Hz),126.9(d,J=13.4Hz),123.8(d,J=3.4Hz),122.0,115.5(d,J=23.7Hz),44.8,17.9.19F NMR(376MHz,CDCl3)δ-117.2.HRMS(ESI)计算值[C15H11BrFO2,M-H]-:320.9926,实测:320.9927,322.9908(对于81Br).
实施例50:溴代吡格列酮的制备(化合物65)
取一25mL Schlenk反应管,加入吡格列酮盐酸盐196.4mg,二溴海因85.8mg,间硝基苯磺酸10.2mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代吡格列酮169.8mg,产率78%。
1H NMR(400MHz,CDCl3)δ12.05(brs,1H),8.38(d,J=2.3Hz,1H),7.60(dd,J=8.0,2.3Hz,1H),7.45(d,J=2.1Hz,1H),7.34(d,J=7.9Hz,1H),7.20(dd,J=8.4,2.1Hz,1H),7.09(d,J=8.5Hz,1H),4.91(dd,J=8.8,4.6Hz,1H),4.37(t,J=6.6Hz,2H),3.30(dd,J=14.2,4.6Hz,1H),3.18(t,J=6.6Hz,2H),3.08(dd,J=14.2,8.8Hz,1H),2.60(q,J=7.6Hz,2H),1.18(t,J=7.6Hz,3H).13C NMR(100MHz,CDCl3)δ175.52,171.48,155.1,153.6,148.2,136.8,135.9,133.6,130.4,129.8,123.4,113.5,110.7,68.0,52.5,36.6,35.6,24.9,15.3.HRMS(ESI)计算值[C19H20N2O3SBr,M+H]+:435.0378,实测:435.0372,437.0353(对于81Br).
实施例51:溴代比卡鲁胺的制备(化合物66)
取一25mL Schlenk反应管,加入比卡鲁胺215.2mg,二溴海因85.8mg,间硝基苯磺酸10.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代比卡鲁胺203.7mg,产率80%。
1H NMR(400MHz,CDCl3)δ9.97(s,1H),9.72(s,2H),8.72(s,2H),8.58(d,J=8.7Hz,1H),8.03(s,2H),7.94-7.87(m,6H),7.77(d,J=8.7Hz,1H),7.15(td,J=8.4,3.7Hz,6H),5.09(d,J=4.6Hz,3H),3.99(dd,J=14.5,5.9Hz,3H),3.52(dd,J=14.5,1.9Hz,3H),1.63(d,J=3.5Hz,9H).13C NMR(100MHz,CDCl3)δ171.7,171.7,167.5,164.9,140.6,139.4,138.1,135.1,134.9,134.9,133.4,133.1,131.12,131.08,131.0,131.0,123.2,122.8,120.5,117.9,117.9,116.9,116.7,116.0,115.3,114.1,106.9,105.7,74.7,74.5,61.6,61.5,27.7.19F NMR(376MHz,CDCl3)δ-58.6,-62.2,-101.3,-101.4.HRMS(ESI)计算值[C18H12BrF4N2O4S,M-H]-:506.9639,实测:506.9639,508.9618(对于81Br).
实施例52:溴代来氟米特的制备(化合物67)
取一25mL Schlenk反应管,加入来氟米特135.1mg,二溴海因85.8mg,间硝基苯磺酸10.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代来氟米特167.6mg,产率96%。
1H NMR(400MHz,CDCl3)δ8.61(d,J=8.7Hz,1H),8.51(s,1H),8.06(s,1H),7.84(d,J=2.0Hz,1H),7.61(dd,J=8.8,2.0Hz,1H),2.81(s,3H).13C NMR(100MHz,CDCl3)δ173.4,158.9,147.7,138.2,129.4(q,J=3.9Hz),127.3(q,J=33.4Hz),125.8(q,J=3.7Hz),124.3(q,J=270.7Hz),121.2,112.9,112.0,12.8.19F NMR(376MHz,CDCl3)δ-62.3.HRMS(ESI)计算值[C12H7N2O2F3Br,M-H]-:346.9650,实测:346.9650,348.9625(对于81Br).
实施例53:溴代卢非酰胺的制备(化合物68)
取一25mL Schlenk反应管,加入卢非酰胺119.1mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,三氟甲磺酸75.0mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代来氟米特134.7mg,产率85%。
1H NMR(400MHz,DMSO-d6)δ8.61(s,1H),7.91-7.77(m,2H),7.58-7.44(m,1H),7.22(t,J=9.0 Hz,1H),5.76(s,2H).13C NMR(100MHz,DMSO-d6)δ161.2,160.0(dd,J=249.2,7.5Hz),157.0(dd,J=249.2,7.5Hz),142.9,134.5(d,J=9.9Hz),127.0,113.6(dd,J=22.9,3.9Hz),112.8(t,J=20.0Hz),103.7(dd,J=21.5,3.9Hz),41.6(t,J=3.5Hz).19FNMR(376MHz,DMSO-d6)δ-106.8,-114.4.HRMS(ESI)计算值[V10H8F2N4O,M+H]+:316.9850,实测:316.9842,318.9821(对于81Br).
实施例54:溴代安塔鲁伦甲酯的制备(化合物69)
取一25mL Schlenk反应管,加入安塔鲁伦甲酯149.1mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代安塔鲁伦101.8mg,产率54%。
1H NMR(400MHz,CDCl3)δ8.82(t,J=1.8Hz,1H),8.43-8.30(m,2H),8.20(dt,J=7.8,1.5Hz,1H),7.70(dd,J=8.9,4.3Hz,1H),7.60(t,J=7.8Hz,1H),7.19(dd,J=9.8,8.9Hz,1H),3.98(s,3H).13C NMR(100MHz,CDCl3)δ171.8(d,J=4.5Hz),168.1,166.3,159.8(d,J=261.6Hz),137.4(d,J=8.6Hz),133.4(d,J=1.4Hz),132.4,131.7,131.1,129.1,128.7,126.9,119.0(d,J=22.5Hz),117.2(d,J=3.7Hz),114.4(d,J=12.8Hz),52.4.19FNMR(376MHz,VDVl3)δ-110.6.HRMS(ESI)计算值[V16H11N2O3FBr,M+H]+:376.9937,实测:376.9950,378.9928(对于81Br).
实施例55:氯代非诺贝特的制备(化合物70)
取一25mL Schlenk反应管,加入非诺贝特180.4mg,三氯异腈尿酸46.5mg,三氟甲磺酸3.8mg,六氟异丙醇2mL,在60℃下搅拌18小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到氯代非诺贝特148.2mg,产率75%。
1H NMR(400MHz,CDCl3)δ7.83(d,J=2.2Hz,1H),7.75-7.62(m,2H),7.57(dd,J=8.6,2.2Hz,1H),7.49-7.37(m,2H),6.84(d,J=8.6Hz,1H),5.07(p,J=6.3Hz,1H),1.67(s,6H),1.20(d,J=6.3Hz,6H).13C NMR(100MHz,CDCl3)δ192.9,172.5,155.3,138.7,135.7,132.3,131.0,129.3,128.6,125.4,116.8,80.9,77.3,77.0,76.7,69.4,25.1,21.4.HRMS(ESI)计算值[C20H21O4Cl2,M+H]+:395.0817,实测:395.0817,397.0794(对于37Cl).
实施例56:氯代氯贝特的制备(化合物71)
取一25mL Schlenk反应管,加入氯贝特121.4mg,三氯异腈尿酸46.5mg,三氟甲磺酸3.8mg,六氟异丙醇2mL,在60℃下搅拌20小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到氯代氯贝特127.5mg,产率92%。
1H NMR(400MHz,CDCl3)δ7.37(d,J=2.6Hz,1H),7.10(dd,J=8.8,2.6Hz,1H),6.86(d,J=8.8Hz,1H),4.25(q,J=7.1Hz,2H),1.60(s,6H),1.27(t,J=7.2Hz,3H).13C NMR(100MHz,CDCl3)δ173.5,150.3,130.0,127.6,127.5,127.1,120.6,81.1,61.5,24.9,14.0.HRMS(ESI)计算值[V12H15Vl2O3,M+H]+:277.0398,实测:277.0395,279.0371(对于37Cl).
实施例57:氯代奥硝唑的制备(化合物72)
取一25mL Schlenk反应管,加入奥硝唑109.8mg,三氯异腈尿酸46.5mg,三氟甲磺酸3.8mg,六氟异丙醇2mL,在60℃下搅拌18小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到氯代奥硝唑48.3mg,产率38%。
1H NMR(400MHz,CDCl3)δ4.76(s,1H),4.37(h,J=4.3Hz,1H),4.20(dd,J=14.5,2.7Hz,1H),4.01(dd,J=14.5,9.9Hz,1H),3.71(dd,J=5.4,3.3Hz,2H),2.45(s,3H).13CNMR(100MHz,CDCl3)δ145.1,140.3,118.8,68.9,49.0,46.1,14.3.HRMS(ESI)计算值[C7H10N3O3Cl2,M+H]+:254.0099,实测:254.0104,256.0074(对于37Cl).
实施例58:氯代安塔鲁伦甲酯的制备(化合物73)
取一25mL Schlenk反应管,加入安塔鲁伦甲酯149.1mg,三氯异腈尿酸46.5mg,三氟甲磺酸3.8mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到氯代安塔鲁伦甲酯106.5mg,产率64%。
1H NMR(400MHz,CDCl3)δ8.82(t,J=1.8Hz,1H),8.35(dt,J=7.8,1.5Hz,1H),8.25-8.16(m,2H),7.65-7.51(m,2H),7.30-7.20(m,1H),3.98(s,3H).13C NMR(100MHz,CDCl3)δ171.9(d,J=4.5Hz),168.1,166.2,159.2(d,J=261.2Hz),134.4(d,J=8.7Hz),132.3,131.7,131.1,130.4(d,J=1.6Hz),130.1(d,J=3.7Hz),129.1,128.7,126.9,118.6(d,J=22.8Hz),113.9(d,J=13.1Hz),52.3.19F NMR(376MHz,CDCl3)δ-112.1.HRMS(ESI)计算值[C16H11N2O3FCl,M+H]+:333.0442,实测:333.0440,335.0418(对于37Vl).
实施例59:碘代来氟米特的制备(化合物74)
取一25mL Schlenk反应管,加入来氟米特135.1mg,N-碘代丁二酰亚胺135.0mg,间硝基苯磺酸10.2mg,六氟异丙醇2mL,在60℃下搅拌12小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到碘代来氟米特188.1mg,产率94%。
1H NMR(400MHz,CDCl3)δ8.55(d,J=0.6Hz,1H),8.50(dd,J=8.7,0.7Hz,1H),8.05(dd,J=2.1,0.7Hz,1H),7.92(s,1H),7.64(dd,J=8.7,2.2Hz,1H),2.82(s,3H).13C NMR(100MHz,CDCl3)δ173.7,158.9,147.6,140.6,135.7(q,J=3.9Hz),127.8(q,J=33.4Hz),126.6(q,J=3.9Hz),122.7(q,J=272.5Hz),120.8,111.8,88.9,12.8.19F NMR(376MHz,CDCl3)δ-62.3.HRMS(ESI)计算值[C12H9N2O2F3I,M+H]+:396.9661,实测:396.9664.
实施例60:碘代氯贝特的制备(化合物75)
取一25mL Schlenk反应管,加入氯贝特121.4mg,N-碘代丁二酰亚胺135.0mg,间硝基苯磺酸10.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到碘代氯贝特188.1mg,产率94%。
1H NMR(400MHz,CDCl3)δ8.55(d,J=0.6Hz,1H),8.50(dd,J=8.7,0.7Hz,1H),8.05(dd,J=2.1,0.7Hz,1H),7.92(s,1H),7.64(dd,J=8.7,2.2Hz,1H),2.82(s,3H).13C NMR(100MHz,CDCl3)δ173.7,158.9,147.6,140.6,135.7(q,J=3.9Hz),127.8(q,J=33.4Hz),126.6(q,J=3.9Hz),122.7(q,J=272.5Hz),120.8,111.8,88.9,12.8.19F NMR(376MHz,CDCl3)δ-62.3.HRMS(ESI)计算值[C12H9N2O2F3I,M+H]+:396.9661,实测:396.9664.
实施例61:碘代非诺贝特的制备(化合物76)
取一25mL Schlenk反应管,加入非诺贝特180.4mg,N-碘代丁二酰亚胺135.0mg,间硝基苯磺酸10.2mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到碘代非诺贝特236.1mg,产率97%。
1H NMR(400MHz,CDCl3)δ8.20(d,J=2.2Hz,1H.),7.66-7.58(m,3H),7.39(d,J=8.5Hz,2H),6.69(d,J=8.6Hz,1H),5.03(p,J=603Hz,1H),1.66(s,6H),1.16(d,J=6.3Hz,6H).13C NMR(100MHz,CDCl3)δ192.4,172.3,158.4,141.4,138.5,135.6,131.7,131.1,130.9,128.5,114.8,89.4,81.1,77.3,77.0,76.7,69.2,25.2,21.3.HRMS(ESI)计算值[C20H21O4ClI,M+H]+:487.0173,实测:487.0171,489.0148(对于37Cl).
实施例62:氯代替硝唑的制备(化合物77)
取一25mL Schlenk反应管,加入替硝唑123.6mg,三氯异腈尿酸93.0mg,三氟甲磺酸3.5mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到碘代非诺贝特95.8mg,产率68%。
1H NMR(400MHz,CDCl3)δ4.52(t,J=6.4Hz,2H),3.39(t,J=6.5Hz,2H),3.06(q,J=7.1Hz,2H),2.55(s,3H),1.44(t,J=7.0Hz,3H).13C NMR(100MHz,CDCl3)δ143.7,117.4,49.7,49.0,37.7,14.0,6.5.HRMS(ESI)计算值[C8H13N3O4SCl,M+H]+:282.0315,实测:282.0319,284.0291(对于37Cl)
实施例63:溴代替硝唑的制备(化合物78)
取一25mL Schlenk反应管,加入替硝唑123.6mg,二溴海因85.8mg,间硝基苯磺酸5.1mg,六氟异丙醇2mL,在60℃下搅拌24小时。反应结束后旋转蒸发脱除溶剂后柱层析分离得到溴代替硝唑123.9mg,产率76%。
1H NMR(400MHz,CDCl3)δ4.55(t,J=7.2Hz,2H),3.39(t,J=7.2Hz,2H),3.06(q,J=7.5Hz,2H),2.58(s,3H),1.44(t,J=7.5Hz,3H).13C NMR(100MHz,CDCl3)δ145.5,103.6,49.9,48.9,38.8,14.2,6.6.HRMS(ESI)计算值[C8H13N3O4SBr,M+H]+:325.9810,实测:325.9809,327.9788(对于81Br).
虽然本申请所揭露的实施方式如上,但所述的内容仅为便于理解本申请而采用的实施方式,并非用以限定本申请。任何本申请所属领域内的技术人员,在不脱离本申请所揭露的精神和范围的前提下,可以在实施的形式及细节上进行任何的修改与变化,但本申请的专利保护范围,仍须以所附的权利要求书所界定的范围为准。

Claims (10)

1.一种芳环化合物的卤化合成方法,包括:在催化剂、卤化试剂X-Y和溶剂存在的条件下,对芳环化合物进行卤化反应得到芳基卤化物;
这里,所述芳环化合物具有式(I)所示的结构,所述芳基卤化物具有式(II)所示的结构;其中表示芳基或杂芳基;R1,R2,R3,R4和R5中的至少一个选自共轭基团或吸电子基团,其余的基团分别独立选自氢、卤素、硝基、C1-5卤代烷基、羟基、芳基、杂芳基、氨基、C1-5烷基取代的单烷基氨基或二烷基氨基、苄基氨基、C1-14烷基、C1-5烷氧基、C1-5醛基或C1-5酯基;X选自氯、溴或碘;
所述催化剂为磺酸;
所述的卤化试剂为X-Y,其中,Y选自琥珀酰亚胺、咪唑烷基二酮、三聚氰酸、邻苯二甲酰亚胺、糖精、酰胺基、叔丁氧基、磺酰胺、脒;X选自氯、溴或碘;可选地,所述卤化试剂的结构为
所述溶剂是六氟异丙醇、三氟乙醇、三氟乙酸、硝基苯、硝基甲苯、硝基甲烷、硝基乙烷、硝基异丙烷、硝基正丙烷和硝基正丁烷中的一种或几种的混合物。
2.如权利要求1所述的卤化合成方法,其中,所述的催化剂的分子结构式为R6-SO3H;其中R6选自氢、卤素、羟基、烷基、卤代烷基、烷氧基、苯甲氧基、酰氧基、酰基、酯基、酰胺基、单烷基氨基、二烷基氨基、芳基、取代的芳基、杂芳基或取代的杂芳基;
优选地,所述的催化剂为CF3SO3H、甲磺酸、苯磺酸、对硝基苯磺酸或邻硝基苯磺酸。
3.根据权利要求1所述的卤化合成方法,其中,为苯、萘、蒽、吡唑、联萘酚、吲哚、氮杂吲哚、吡咯、四氢喹啉、N-苯基吗啉、花椒毒素、普萘洛尔、吉菲罗齐、萘普生、双氯芬酸、美他沙酮、氯吡格雷、氯霉唑、阿普斯特、普鲁卡因、苯并环己烷、2-甲基苯并环氧己烷、香草醛、罂粟碱、鬼臼毒素、鱼藤酮、青藤碱、苯并呋喃、嘌呤、噻吩、苯并噻吩、吲唑、吡唑、咪唑或咪唑并吡嗪;
优选地,为苯、吡啶、嘧啶、吡嗪、咪唑或吡唑;
R1,R2,R3,R4和R5分别独立选自氢、卤素、硝基、三氟甲基、羟基、苯基、氨基、C1-5烷基取代的单烷基氨基或二烷基氨基、苄基氨基、C1-14烷基、C1-5烷氧基、C1-5醛基或C1-5酯基。
4.根据权利要求1所述的卤化合成方法,其中,所述的芳环化合物选自以下化合物中的任一种:氯贝特、非诺贝特、奥硝唑、甲硝唑、氟比洛芬、吡格列酮、卢非酰胺、阿塔鲁伦甲酯、比卡鲁胺、来氟米特、替硝唑、三氟甲苯、2,4-二氟苯甲酸、硝基苯、苯甲酸甲酯、苯甲酸、苯基甲基砜、氟苯、碘苯、对溴硝基苯、对硝基苄醇、对甲基硝基苯、对氯苯甲酸甲酯、对氟苯甲酸甲酯、对甲基苯磺酰胺、对碘苯甲醛、对溴三氟甲苯、对溴苯甲腈、3-氯苯甲酸、1,3-二氟苯、1,2-苯二甲酸二甲酯、2-氟苯甲腈、2-甲氧基吡啶、2,6-二甲氧基嘧啶、2-甲氧基吡嗪、对溴三氟甲苯、对氟苯甲酸、对氯苯甲醛和1,2,3-三氟苯。
5.根据权利要求1所述的卤化合成方法,其中,所述卤化反应的反应温度为0~150℃,优选为60℃。
6.根据权利要求1至5中任一项所述的卤化合成方法,其中,所述芳环化合物与卤化试剂的摩尔比为1∶(0.4~10)。
7.根据权利要求6所述的卤化合成方法,其中,
对于氯化反应,卤化试剂为三氯异氰尿酸(TCCA),所述芳环化合物与卤化试剂的摩尔比为1∶0.4;
对于溴化反应,卤化试剂为二溴海因(DBDMH),所述芳环化合物与卤化试剂的摩尔比为1∶0.6;或者
对于碘化反应,卤化试剂为N-碘代丁二酰亚胺(NIS),所述芳环化合物与卤化试剂的摩尔比为1∶1.2。
8.根据权利要求1至5中任一项所述的卤化合成方法,其中,所述芳环化合物与催化剂的摩尔比为1∶(0.001~10),优选为1∶0.05。
9.根据权利要求1至5中任一项所述的卤化合成方法,其中,所述芳环化合物的浓度为0.001~10.0M,优选为0.5M。
10.根据权利要求1至5中任一项所述的卤化合成方法,其中,所述卤化反应的反应时间为0.1~72小时,优选为0.5~36小时,更优选为1~25小时。
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