Synthesis 2023; 55(06): 967-976
DOI: 10.1055/a-1953-1849
paper
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Synthesis of Benzoazepinone Derivatives via Photoredox Deaminative Radical Cascade Alkylation of 1,7-Dienes and 1,7-Enynes

Wanderson C. de Souza
,
Rafaely N. Lima
,
Iva S. de Jesus
,
José Tiago M. Correia
,
Márcio W. Paixão
We are grateful to Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq; INCT Catálise, Grants No 444061/2018-5 and Universal Project 405052/2021-9), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP; 21/06099-5), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and GSK for financial support.


Abstract

A deaminative alkyl radical cascade cyclization of 1,7-dienes is described under visible-light photocatalysis. This method delivers a family of benzoazepinones (benzazepinones) and occurs under mild reaction conditions to access a broad substrate scope with excellent functional group tolerance and good yields. This protocol has also been extended to 1,7-enynes, furnishing a representative collection of cyclopentaquinolinones.

Supporting Information



Publication History

Received: 23 August 2022

Accepted after revision: 29 September 2022

Accepted Manuscript online:
29 September 2022

Article published online:
20 December 2022

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