Synthesis
DOI: 10.1055/a-2499-2559
feature

Nickel-Catalyzed Regioselective Access to Dibenzo[c,f][1,2]thiazepine 5,5-Dioxides and Dibenzo[b,e]azepines

Uma Sankar Mandal
,
Sk. Shamim Ahamed
,
Tapas Ghosh
T.G. gratefully acknowledges funding from the Science and Engineering Research Board (SERB), India for a TARE fellowship (TAR/2023/000045). S.S.A. is grateful to the Council of Scientific and Industrial Research (CSIR), India for a Junior Research Fellowship (JRF).


Abstract

An effective technique that yields dibenzo[c,f][1,2]thiazepine 5,5-dioxide and dibenzo[b,e]azepine derivatives through nickel-catalyzed regioselective intramolecular acetylene hydroarylation is reported. The developed method proceeds without the need for any additional external ligand. This protocol tolerates different functional groups and furnishes the desired products regioselectively in good to excellent yields.

Supporting Information



Publication History

Received: 09 October 2024

Accepted after revision: 09 December 2024

Accepted Manuscript online:
09 December 2024

Article published online:
17 January 2025

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