Synthesis of α-trifluoromethylstyrene derivatives via Ni-catalyzed cross-coupling of 2-bromo-3,3,3-trifluoropropene and aryl Grignard reagents
作者:Osamu Kobayashi、Daisuke Uraguchi、Tetsu Yamakawa
DOI:10.1016/j.jfluchem.2009.03.002
日期:2009.6
3-trifluoropropene and aryl Grignard reagents was investigated. When NiCl2(PPh3)2 was used as a catalyst, the highest yield of α-trifluoromethylstyrene (89%) from 2-bromo-3,3,3-trifluoropropene and PhMgBr was obtained in 1,3-dimethyl-2-imidazolidinone at 50 °C for 30 min. Various α-trifluoromethylstyrene derivatives could be produced in satisfactory yields by NiCl2(PPh3)2-catalyzed coupling using aryl Grignard reagents
研究了镍催化的2-溴-3,3,3-三氟丙烯和芳基格氏试剂的交叉偶联。当使用NiCl 2(PPh 3)2作为催化剂时,在1,3-二甲基-2-中从2-溴-3,3,3-三氟丙烯和PhMgBr中获得最高产率的α-三氟甲基苯乙烯(89%)。咪唑烷酮在50°C下放置30分钟。使用芳基格氏试剂通过NiCl 2(PPh 3)2催化的偶联可以令人满意的产率生产各种α-三氟甲基苯乙烯衍生物。