Straightforward Reductive Esterification of Carbonyl Compounds with Carboxylic Acids through Tosylhydrazone Intermediates
作者:Angel-Humberto García-Muñoz、María Tomás-Gamasa、M. Carmen Pérez-Aguilar、Erick Cuevas-Yañez、Carlos Valdés
DOI:10.1002/ejoc.201200647
日期:2012.7
The reaction of carboxylic acids with tosylhydrazones in basic media gives rise to the corresponding esters through an O–H insertion reaction in the in situ generated diazo compound. The process is operationally very simple, catalyst free, and very general with regard to the structure of both coupling partners. In particular, the esterification can be accomplished by employing tosylhydrazones derived
羧酸与甲苯磺酰腙在碱性介质中的反应通过原位生成的重氮化合物中的 O-H 插入反应产生相应的酯。该过程在操作上非常简单,无催化剂,并且关于两个偶联伙伴的结构非常通用。特别地,酯化可以通过使用衍生自可烯醇化羰基化合物的甲苯磺酰腙来完成。考虑到来自羰基化合物的甲苯磺酰腙很容易获得,该反应可以看作是羰基化合物的还原酯化。