Kinetic resolution of racemic α-hydroxyphosphonates by asymmetric esterification using achiral carboxylic acids with pivalic anhydride and a chiral acyl-transfer catalyst
作者:Isamu Shiina、Keisuke Ono、Takayoshi Nakahara
DOI:10.1039/c3cc44293d
日期:——
A practical protocol is developed to directly provide chiral alpha-acyloxyphosphonates and alpha-hydroxyphosphonates from (+/-)-alpha-hydroxyphosphonates utilizing the transacylation process to generate the mixed anhydrides from acid components and pivalic anhydride in the presence of organocatalysts (s-value = 33-518).
开发了一种实用的方案,可在有机催化剂存在下,利用转酰基作用从酸组分和新戊酸酐生成混合酸酐,从而直接从(+/-)-α-羟基膦酸酯中提供手性α-酰氧基膦酸酯和α-羟基膦酸酯。 = 33-518)。