Enantioselective synthesis of optically active homoallylamines by nucleophilic addition of chirally modified allylboranes to N-silylimines
作者:Shinichi Itsuno、Katsuhiro Watanabe、Takeshi Matsumoto、Shizue Kuroda、Ayako Yokoi、Ashraf El-Shehawy
DOI:10.1039/a902635e
日期:——
Enantioselectivity in the allylboration of N-silylimines with a variety of chirally modified allylboron reagents has been examined. Optically active N-sulfonylamino alcohols (16, 17 and 19) derived from D-camphor and norephedrine were found to be efficient chiral ligands for the allylboration reagent. These reagents smoothly reacted with N-silylimines to give the corresponding homoallylic amines in
已经研究了N-甲硅烷基丙胺与多种手性改性的烯丙基硼试剂在烯丙基硼化中的对映选择性。发现衍生自D-樟脑和去氧麻黄碱的旋光性N-磺酰基氨基醇(16、17和19)是烯丙基硼化试剂的有效手性配体。这些试剂与N-甲硅烷基亚胺平滑反应,以高达96%ee的高对映体选择性得到相应的均烯丙基胺。