The Efficient Synthesis of Alkoxy-esters from Hydroxy Carboxylic Acids Using Dimsyllithium in Dimethylsulfoxide Followed by Alkylation with an Alkyl Halide
<i>N</i>-Heterocyclic Carbene-Catalyzed Conjugate Additions of Alcohols
作者:Eric M. Phillips、Matthias Riedrich、Karl A. Scheidt
DOI:10.1021/ja1061196
日期:2010.9.29
An efficient intermolecular conjugateaddition of alcohols to activated alkenes catalyzed by N-heterocyclic carbenes has been developed. With 5 mol % of the free carbene derived from IMes·HCl, unsaturated ketones and esters are competent substrates, and a variety of primary and secondary alcohols can be employed as the nucleophile. No oligomerization is observed under these mild conditions for effective
The Efficient Synthesis of Alkoxy-esters from Hydroxy Carboxylic Acids Using Dimsyllithium in Dimethylsulfoxide Followed by Alkylation with an Alkyl Halide
Hydroxy acids are converted directly into the related alkyl ether-alkyl esters in high yields in a single operation by double deprotonation using dimsyllithium in dimethylsulfoxide followed by treatment with an alkyl halide.