The First Generation and Stereospecific Alkylation of α-Trifluoromethyl Oxiranyl Anion
作者:Yoshihiro Yamauchi、Toshimasa Katagiri、Kenji Uneyama
DOI:10.1021/ol016829f
日期:2002.1.1
[reaction: see text] Generation and reactions of oxiranyl anion 2 stabilized by a trifluoromethyl group are described. Treatment of (S)-2,3-epoxy-1,1,1-trifluoropropane (75% ee) with n-BuLi followed by electrophiles gave corresponding 2-alkylated epoxide 3 with retention of stereochemistry in moderate to good yields. The reaction is applicable for a general synthesis of optically active trifluoromethylated
[反应:参见正文]描述了由三
氟甲基稳定化的
环氧乙烷基阴离子2的产生和反应。用
正丁基锂然后亲电处理(S)-2,3-环氧-
1,1,1-三氟丙烷(75%ee),得到相应的2-烷基化的
环氧化物3,并以中等至良好的产率保留了立体
化学。该反应适用于光学活性的三
氟甲基化叔醇的一般合成。