Synlett 2020; 31(14): 1430-1434
DOI: 10.1055/s-0040-1707169
letter
© Georg Thieme Verlag Stuttgart · New York

Facile Approach to Geminal Heterodihalogenation. One-Pot Synthesis of α-Bromo-α-Chloro Ketones

Jin-feng Zhou
,
Dong-min Tang
,
Ming Bian
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, P. R. China   eMail: bianming@sit.edu.cn
› Institutsangaben
We are grateful to the NSFC (21302204) for financial support.
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Publikationsverlauf

Received: 30. März 2020

Accepted after revision: 04. Juni 2020

Publikationsdatum:
01. Juli 2020 (online)


Abstract

An efficient and practical protocol for the geminal heterodihalogenation of methyl ketones by using readily available dimethyl sulfoxide and a combination of HCl and HBr is reported. Control experiments suggested that the acidity of the solution, as well as the oxidizing ability and nucleophilicity of the dimethyl sulfoxide might work cooperatively in ensuring the success of the tandem substitution. Its operational simplicity, easy accessibility, and mild oxidative conditions suggest that the present strategy might be useful for the assembly of bromochloromethyl functional groups in drug discovery.

Supporting Information