Highly stereoselective asymmetric Michael addition reactions employing (R;E)-3,3,3-trifluoroprop-1-enyl p-tolyl sulphoxide
作者:Takashi Yamazaki、Nobuo Ishikawa、Hitoshi Iwatsubo、Tomoya Kitazume
DOI:10.1039/c39870001340
日期:——
(R;E)-3,3,3-Trifluoroprop-1-enyl p-tolyl sulphoxide, prepared in three steps from ethyl trifluoroacetate, showed a high degree of diastereoselectivity in Michael addition reactions with enolates; by this means, optically active trifluoromethylated organic molecules can be obtained readily in high yield as well as in high optical purity.
由三氟乙酸乙酯分三步制备的(R;E)-3,3,3-三氟丙-1-烯基对甲苯基亚砜在与烯醇盐的迈克尔加成反应中显示出高度的非对映选择性;通过这种方式,可以容易地以高收率和高光学纯度获得光学活性的三氟甲基化的有机分子。