A highly enantioselective kinetic resolution of tertiary 2‐alkoxycarboxamido allylic alcohols has been achieved through a chiral phosphoric acid catalyzed intramolecular transesterification reaction. Both alkyl,aryl‐ and dialkyl‐substituted tertiary allylic alcohols were resolved with excellent efficiencies, affording both the recovered tertiary alcohols and the carbamate products with high enantioselectivities
通过手性
磷酸催化的分子内酯交换反应,可以实现对2-烷氧基羧酰胺基烯丙基醇的高度对映选择性动力学拆分。烷基,芳基和二烷基取代的叔
烯丙醇均能以优异的效率拆分,使回收的叔醇和
氨基甲酸酯产品均具有高对映选择性(系数高达164.6)。克含量为1 mol%的催化剂的反应以及将对映体富集的产品轻松转化为有用的手性结构单元(例如手性
恶唑烷酮和β-
氨基醇),证明了该反应的价值。