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DOI: 10.1055/a-1430-5100
Sulfur-Promoted Redox Cyclization of 2,2′-Dinitrodiphenyl Disulfides and Benzylamines


Abstract
This study aims to develop green and sustainable advanced synthetic methods based on redox cyclization. Elemental sulfur is shown to promote the efficient synthesis of 2-substituted benzothiazoles from 2,2′-dinitrodiphenyl disulfides and benzylamines via redox cyclization in the absence of transition-metal catalysts and solvents. The 2-substituted benzothiazoles are obtained in good to excellent yields. This synthetic methodology is highly atom-economical and does not require any external oxidizing and/or reducing agents.
Key words
redox cyclization - benzothiazoles - 2,2′-dinitrodiphenyl disulfides - benzylamines - elemental sulfur - atom-economicalSupporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/a-1430-5100.
- Supporting Information
Publication History
Received: 20 February 2021
Accepted after revision: 12 March 2021
Accepted Manuscript online:
12 March 2021
Article published online:
01 April 2021
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