Oxidative cross-coupling of secondary phosphine chalcogenides with amino alcohols and aminophenols: aspects of the reaction chemoselectivity
作者:Kseniya O. Khrapova、Anton A. Telezhkin、Pavel A. Volkov、Lyudmila I. Larina、Dmitry V. Pavlov、Nina K. Gusarova、Boris A. Trofimov
DOI:10.1039/d1ob00287b
日期:——
temperature, molar ratio of the initial reagents 1 : 1) in a CCl4/Et3N oxidizing system to chemoselectively deliver amides of chalcogenophosphinic acids with free OH groups. Under similar conditions, mono-cross-coupling between secondary phosphine chalcogenides and 1,2- or 1,3-aminophenols proceeds only with the participation of phenolic hydroxyl to give aminophenylchalcogenophosphinic O-esters. The yields
仲膦硫族化物在温和条件下(室温,初始试剂的摩尔比为 1:1)在 CCl 4 /Et 3 N 氧化系统中与伯氨基醇反应,化学选择性地提供具有游离 OH 基团的硫族次膦酸酰胺。在类似条件下,仲膦硫族化物和1,2-或1,3-氨基苯酚之间的单交叉偶联仅在酚羟基的参与下进行,以产生氨基苯基硫族次膦O-酯。合成的功能性酰胺或酯的产率为 60-85%。