Efficient Preparation of γ-Hydroxynitriles via Nitrile Enolate-Epoxide Reactions: Scope and Diastereoselectivity
摘要:
The nucleophilic opening of epoxides by nitrile enolates using an efficient, convenient protocol is described The diastereoselectivity of this reaction was explored and found to give syn:anti ratios ranging from 1.1:1.0 to 4.8:1.0.
A Bond-Weakening Borinate Catalyst that Improves the Scope of the Photoredox α-C–H Alkylation of Alcohols
作者:Kounosuke Oisaki、Motomu Kanai、Kentaro Sakai
DOI:10.1055/s-0040-1707114
日期:2020.8
functionalization reactions is currently a major challenge in organicsynthesis. In this paper, a novel bond-weakening catalyst that recognizes the hydroxygroup of alcohols through formation of a borate is described. An electron-deficient borinic acid–ethanolamine complex enhances the chemical yield of the α-C–H alkylation of alcohols when used in conjunction with a photoredox catalyst and a hydrogen