Synthesis 2016; 48(03): 421-428
DOI: 10.1055/s-0035-1560967
paper
© Georg Thieme Verlag Stuttgart · New York

Copper-Catalyzed O-Methylation of Carboxylic Acids Using DMSO as a Methyl Source

Jing Jia
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
,
Qing Jiang
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
,
An Zhao
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
,
Bin Xu
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
,
Qiang Liu
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
,
Wei-Ping Luo
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
,
Can-Cheng Guo*
College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. of China   Email: ccguo@hnu.edu.cn
› Author Affiliations
Further Information

Publication History

Received: 18 September 2015

Accepted after revision: 27 October 2015

Publication Date:
19 November 2015 (online)


Abstract

A copper-catalyzed O-methylation of carboxylic acids using dimethyl sulfoxide (DMSO) as the methyl source is disclosed. This transformation exhibits a broad substrate scope and excellent functional group tolerance. Mechanistic studies indicate that a methyl radical is generated from dimethyl sulfoxide in the reaction process.

Supporting Information