Readily Accessible, Modular, and Tuneable BINOL 3,3‘-Perfluoroalkylsulfones: Highly Efficient Catalysts for Enantioselective In-Mediated Imine Allylation
作者:Robert Kargbo、Yoko Takahashi、Santosh Bhor、Gregory R. Cook、Guy C. Lloyd-Jones、Ian R. Shepperson
DOI:10.1021/ja070742t
日期:2007.4.1
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。