Synthesis 2021; 53(06): 1149-1156
DOI: 10.1055/s-0040-1706295
paper

Cs2CO3-Mediated Regio- and Stereoselective Sulfonylation of 1,1-Dibromo-1-alkenes with Sodium Sulfinates

Morteza Shiri
a   Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak, Tehran, 1993893973, Iran   Email: mshiri@alzahra.ac.ir
,
Parvin Salehi
a   Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak, Tehran, 1993893973, Iran   Email: mshiri@alzahra.ac.ir
,
Zeinab Mohammadpour
a   Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak, Tehran, 1993893973, Iran   Email: mshiri@alzahra.ac.ir
,
b   Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, 1983969411, Iran
,
Behrouz Notash
c   Department of Chemistry, Shahid Beheshti University, G. C. Evin, Tehran 1983963113, Iran
› Author Affiliations
We are thankful to Alzahra University and the Iran National Science Foundation (INSF) for the financial support.


This paper is dedicated to Professor Majid M. Heravi on the occasion of his 68th birthday.

Abstract

A highly selective synthesis of (Z)-1-bromo-1-sulfonyl alkenes via Cs2CO3-promoted sulfonylation of 1,1-dibromo-1-alkenes with sodium sulfinates is described. Notably, using excess amounts of Cs2CO3 and sodium sulfinate in such a reaction regenerated the parent aldehyde. Interestingly, the reaction of 1-(2,2-dibromovinyl)-2-nitrobenzene in the presence of sulfinates and Cs2CO3 produced isatin. The Sonogashira cross coupling of synthesized (Z)-1-bromo-1-sulfonyl alkenes with phenylacetylene gave selectively the corresponding sulfonylalkynyl alkenes.

Supporting Information



Publication History

Received: 10 July 2020

Accepted after revision: 22 August 2020

Article published online:
06 October 2020

© 2020. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany