Efficient preparation of β-trifluoromethyl acrylates and derivatives via palladium cross-coupling reactions
作者:Gildas Prié、Mohamed Abarbri、Jérôme Thibonnet、Jean-Luc Parrain、Alain Duchêne
DOI:10.1039/b207648a
日期:2003.1.20
Stereoselective construction of 3-trifluoromethyl conjugated dienoates, trienoates or dienynoates was achieved from ethyl (Z)-4,4,4-trifluoro-3-iodobutenoate and alkenyltin or alkynyltin reagents through the Stille reaction or under HeckâSonogashira coupling conditions. Reduction of ethyl 3-trifluoromethyldienoates using DIBAL-H selectively yielded allylic alcohols and hydrolysis with lithium hydroxide yielded the corresponding acids.
通过Stille反应或Heck-Sonogashira偶联条件,从乙基(Z)-4,4,4-三氟-3-碘丁烯酸酯和烯基锡或炔基锡试剂,成功实现了3-三氟甲基共轭二烯酸酯、三烯酸酯或二烯炔酸酯的立体选择性构建。使用DIBAL-H还原乙基3-三氟甲基二烯酸酯可选择性地得到烯丙基醇,而用氢氧化锂水解则得到相应的酸。