CC BY-NC-ND 4.0 · SynOpen 2021; 05(01): 91-99
DOI: 10.1055/a-1422-9411
psp

Simple and Efficient Synthesis of Allyl Sulfones through Cs2CO3-Mediated Radical Sulfonylation of Morita–Baylis–Hillman Adducts with Thiosulfonates

Angothu Shankar
,
Md. Waheed
,
We thank the Department of Science & Technology - Promotion of University Research and Scientific Excellence (DST-PURSE; SR/PURSE Phase 2/32/G) and the Council of Scientific and Industrial Research (CSIR-EMR-II; 02(0340)/18/EMR-II) for funding support. A.S. and M.W. thank CSIR-SRF and UGC-SRF, respectively, for their Research Fellowships.


Abstract

A highly efficient and eco-friendly method has been developed for the synthesis of allyl sulfones using Morita–Baylis–Hillman (MBH) adducts and thiosulfonates under mild conditions. The Cs2CO3-promoted radical sulfonylation provided a series of allyl sulfones in good to high yields with high stereoselectivities. A wide variety of MBH bromides/acetates as well as thiosulfonates were tolerated and reliable in scaled-up synthesis. A plausible mechanism is proposed to rationalize the radical sulfonylation.

Supporting Information



Publication History

Received: 16 February 2021

Accepted after revision: 08 March 2021

Accepted Manuscript online:
10 March 2021

Article published online:
29 March 2021

© 2021. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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