novel mono- and disulfone ligands in just two steps from enantiomerically pure BINOL. These electron-demanding BINOLs have been successfully applied as catalysts for indium-mediated allylation of N-acylhydrazones. A general and highly enantioselective catalytic process is described, in which the presence of two perfluoroalkylsulfone (SO2RF) groups is shown to be crucial for activity and selectivity.
BINOL
全氟烷基
磺酸盐的 Thia-Fries 重排只需两步即可从对映体纯的 BINOL 中提供易于衍生的新型单和二砜
配体。这些需要电子的 BINOL 已成功用作
铟介导的 N-酰基腙烯丙基化的催化剂。描述了一种通用且高度对映选择性的催化过程,其中两个
全氟烷基砜 (SO2RF) 基团的存在对活性和选择性至关重要。烯丙基化过程提供了高达 99% 产率和 99% ee 的相应高
烯丙基胺。