High-Load, Soluble Oligomeric Carbodiimide: Synthesis and Application in Coupling Reactions
作者:Mianji Zhang、Punitha Vedantham、Daniel L. Flynn、Paul R. Hanson
DOI:10.1021/jo048870c
日期:2004.11.1
A facile preparation of a high-load, soluble oligomeric alkyl cyclohexylcarbodiimide (OACC) reagent via ROM polymerization from commercially available starting materials is described. This reagent is exploited as a coupling reagent for esterification, amidation, and dehydration of carboxylic acids (aliphatic and aromatic) with an assortment of alcohols (aliphatic primary, secondary, and benzylic),
描述了通过ROM聚合由市售的起始原料容易地制备高负荷的可溶性低聚烷基环己基碳二亚胺(OACC)试剂的方法。该试剂被用作偶联试剂,用于将羧酸(脂族和芳族)与各种醇(脂族伯,仲和苄基),硫醇,酚和胺(脂族伯,仲,分别是苄基和芳族/苯胺)。偶合事件发生后,用适当的溶剂(Et 2 O,MeOH或EtOAc)沉淀,然后通过SPE过滤,可提供具有极佳收率和纯度的产物。