Trifluoromethyl-stabilized optically active oxiranyl and aziridinyl anions for stereospecific syntheses of trifluoromethylated compounds
作者:Yoshihiro Yamauchi、Tomomi Kawate、Toshimasa Katagiri、Kenji Uneyama
DOI:10.1016/j.tet.2003.09.019
日期:2003.12
1-trifluoropropane was converted into the corresponding oxiranyl anion and reacted with electrophiles such as aldehydes, ketones and halides to give the corresponding adducts in moderate to good yields. The whole reaction occurred with retention of configuration at the stereogenic carbon center. In a similar manner, trifluoromethyl stabilizing aziridinyl anions were generated from the optically active N-tosyl
将旋光的2,3-环氧-1,1,1-三氟丙烷转化为相应的环氧乙烷基阴离子,并与亲电子试剂(如醛,酮和卤化物)反应,以中等至良好的收率得到相应的加合物。整个反应在立体碳中心保留构型而发生。以类似的方式,由旋光的N-甲苯磺酰基和N-茴香基-2-三氟甲基氮丙啶产生了三氟甲基稳定的氮丙啶基阴离子。他们还与各种亲电试剂反应良好。这些反应的产物是通用的合成中间体,可用于合成具有季手性碳中心的各种三氟甲基化化合物。