作者:Ji Hoon Choi、In Howa Jeong
DOI:10.1016/j.tetlet.2007.12.028
日期:2008.2
β,β-Difluoro-α-phenylvinylstannane 3 was prepared in 60% yield from the reaction of β,β-difluoro-α-phenylvinylsulfone 2 with tributyltin hydride in refluxing benzene for 5 h. The cross-coupling reaction of 3 with aryl iodides bearing substituents such as proton, fluoro, chloro, bromo, methoxy, methyl, trifluoromethyl, and nitro on ortho, meta, para positions of the benzene ring in the presence of 10 mol %
β,β-二氟- α-phenylvinylstannane 3以60%的产率制备从β,β-二氟α-phenylvinylsulfone的反应2在回流的苯5小时氢化三丁基锡。在10 mol%Pd(存在)下,3与带有取代基(如质子,氟,氯,溴,甲氧基,甲基,三氟甲基和硝基)的芳基碘在苯环的邻,间,对位上的交叉偶联反应PPH 3)4 /10摩尔%的CuI,得到相应的2,2-二芳基-1,1-二difluoroethenes 4在22-82%的产率。