Synlett 2018; 29(18): 2396-2403
DOI: 10.1055/s-0037-1609948
letter
© Georg Thieme Verlag Stuttgart · New York

Visible-Light-Mediated ipso-Carbosulfonylation of Alkynes: Synthesis of 3-Sulfonylspiro[4,5]trienones from Propiolamides and Sulfonyl Chlorides under Transition-Metal-Free Conditions

Yu Liu*
,
Qiao-Lin Wang
,
Bi-Quan Xiong
,
Pan-Liang Zhang
,
Chang-An Yang
,
Yan-Xia Gong
,
Jing Liao
,
Quan Zhou*
Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, P. R. of China   eMail: lyxtmj_613@163.com   eMail: mmzhq1985@126.com
› Institutsangaben
We thank the Scientific Research Fund of Education Department of Hunan Provincial (No. 16A087), Natural Science Foundation of Hunan Province (No. 2018JJ3208 ) and National Natural Science Foundation of China (No. 21602056) for financial support.
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Publikationsverlauf

Received: 01. August 2018

Accepted after revision: 15. August 2018

Publikationsdatum:
07. September 2018 (online)


Abstract

An efficient and convenient strategy to synthesize diverse 3-sulfonylspiro[4,5]trienones has been developed. This ipso-carbosulfonylation of alkynes proceeds by visible-light catalysis under transition-metal-free conditions and represents a new sulfonylation and ipso-cyclization of alkynes. In this transformation, the O atom in the newly generated carbonyl is derived from H2O and it features a broad substrates scope, especially for alkyl propiolamides and aliphatic sulfonyl chlorides.

Supporting Information