Ether way: The cinchona‐alkaloid‐catalyzed title reaction was achieved in high yields with high to excellent ee values for the first time, and affords key intermediates for the biologically important 2 having a trifluoromethylated all‐carbon quaternary chiral center. Ether‐type catalysts (1) are more efficient in this transformation than the conventional hydroxy analogues.
醚方式:
金鸡纳
生物碱催化的标题反应首次以高收率实现,具有高至极好的ee 值,并为具有三
氟甲基化全碳四元手性中心的
生物学上重要的2提供了关键中间体。
醚类催化剂(1)在转化中比常规的羟基类似物更有效。