Synthesis 2022; 54(09): 2185-2192
DOI: 10.1055/s-0040-1719880
paper

Oxidant-Free Selective Synthesis of Functionalized Chroman-4-ones from ortho-Hydroxyacetophenones under HOAc/DMSO Conditions

Anan Wang
,
Yuanyuan Feng
,
Shuai Li
,
Xu Shi
,
Financial support from the National Natural Science Foundation of China (21702002) and the National College Students Innovation and Entrepreneurship Training Program (202110364407) is gratefully acknowledged.


Abstract

A metal-free and oxidant-free acid-promoted DMSO activation and subsequent reaction is reported. In this protocol, two molecules of DMSO are activated by HOAc and serve as dual synthons which react with ortho-hydroxyacetophenones, affording 3-(methylthiomethyl)chroman-4-ones in moderate to good yields with high selectivity.

Supporting Information



Publication History

Received: 27 October 2021

Accepted after revision: 13 December 2021

Article published online:
26 January 2022

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