电化学介导的芳香醛和脂肪醇氧化酯化反应

Electrochemically Mediated Esterification of Aromatic Aldehydes with Aliphatic Alcohols via Anodic Oxidation

通过电氧化醛和醇合成了一系列酯类化合物.该电合成反应在室温下即可进行,无需惰性气体保护、外源氧化剂、氮杂卡宾(NHC)催化剂和碱[如DBU (1,5-二氮杂二环[5.4.0]十一烯-5)]等的参与.反应采用简单易得的不分隔电解槽和恒电流模式,具有反应条件温和、底物适用范围广、原料廉价易得和操作简便等优点,为酯类化合物的绿色合成提供了一种新策略.

A series of ester compounds were synthesized by direct oxidative coupling of aldehydes with alcohols. The electrosynthesis reaction can be carried out at room temperature without inert gas protection, external oxidants, N-heterocyclic carbene(NHC) catalyst and alkali(such as DBU(1,5-dizzabicyclo[5.4.0]undecen-5-ene)), etc. The oxidative esterification reaction processes in a simple and easily available undivided electrochemical cell and constant current mode. This protocol features mild reaction conditions, broad substrate scope, cheap and easily available starting materials, and simple operation,providing a new strategy for the green synthesis of ester compounds.