Enantioselective Scandium-Catalyzed Vinylsilane Additions: A New Approach to the Synthesis of Enantiopure β,γ-Unsaturated α-Hydroxy Acid Derivatives
作者:David A. Evans、Yimon Aye
DOI:10.1021/ja063878k
日期:2006.8.1
The development of the Lewis acid-catalyzed alkenylation using trimethylvinylsilanes is described. Both aliphatic and aromatic vinylsilanes were effective nucleophiles at room temperature affording chiral allylic alcohol products in excellent enantioselectivities (97 → 99% ee) and in moderate to good yields (45−99%). Complete retention of vinysilane geometry was observed where applicable.
描述了使用三甲基乙烯基硅烷的路易斯酸催化烯基化的发展。脂肪族和芳香族乙烯基硅烷在室温下都是有效的亲核试剂,以优异的对映选择性 (97 → 99% ee) 和中等至良好的产率 (45-99%) 提供手性烯丙醇产品。在适用的情况下观察到乙烯基硅烷几何形状的完全保留。