Synthesis 2020; 52(02): 297-303
DOI: 10.1055/s-0039-1690031
paper
© Georg Thieme Verlag Stuttgart · New York

DMSO-Mediated Synthesis of Methylene-Bridged Unsymmetrical Bisamides in the Presence of AcOH

Yi Zhang §
a   School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 310053, P. R. of China
b   School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. of China   Email: yongmin.ma@tzc.edu.cn   Email: cjmaggie@163.com
,
Dongheng Zhou §
a   School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 310053, P. R. of China
,
Yongmin Ma
a   School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 310053, P. R. of China
b   School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. of China   Email: yongmin.ma@tzc.edu.cn   Email: cjmaggie@163.com
,
Jing Chen
a   School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, 310053, P. R. of China
› Author Affiliations
This work was supported by the financial support from Natural Science Foundation of Zhejiang Province (LY19H300001) is gratefully acknowledged.
Further Information

Publication History

Received: 30 July 2019

Accepted after revision: 22 September 2019

Publication Date:
09 October 2019 (online)


§ These authors contributed equally.

Abstract

A simple and efficient procedure for the synthesis of N-[(methylthio)methyl]benzamides and methylene-bridged unsymmetrical bisamides was achieved mediated by DMSO in the presence of acetic acid. DMSO plays a dual role in the transformation, as not only a solvent, but also an environmentally benign methylene source. The protocol provides new strategies for effective synthesis of unsymmetrical bisamides and avoids the use of transition-metal catalysts.

Supporting Information