We report herein a protocol for an organocatalyzed asymmetric vinylogous Michaeladdition of aryl alkane nucleophiles with enals under base- and additive-free conditions. A series of allylic building blocks were obtained in 60%–93% yield and 88–99% ee with 20 mol % diphenylprolinol silyl ether as catalyst. This protocol has advantages such as excellent chemoselectivity and regioselectivity, good tolerance
我们在此报告了在无碱和无添加剂的条件下,芳基烷烃亲核试剂与烯醇发生有机催化的不对称插烯迈克尔加成的方案。以 20 mol% 二苯基脯氨醇甲硅烷基醚为催化剂,以 60%–93% 的收率和 88–99% ee 获得了一系列烯丙基结构单元。该方案具有优异的化学选择性和区域选择性、功能耐受性好、反应条件简单等优点。