Ni P, Tan J, Li R, Huang H, Zhang F, Deng GJ. Brønsted acid-promoted thiazole synthesis under metal-free conditions using sulfur powder as the sulfur source.
RSC Adv 2020;
10:3931-3935. [PMID:
35492663 PMCID:
PMC9048575 DOI:
10.1039/c9ra09656f]
[Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 01/07/2020] [Indexed: 01/25/2023] Open
Abstract
A Brønsted acid-promoted sulfuration/annulation reaction for the one-pot synthesis of bis-substituted thiazoles from benzylamines, acetophenones, and sulfur powder has been developed. One C–N bond and multi C–S bonds were selectively formed in one pot. The choice of the Brønsted acid was the key to the high efficiency of this transformation under metal-free conditions.
A Brønsted acid-promoted protocol for the synthesis of 2,4-disubstituted thiazoles from benzylamines, acetophenones, and sulfur powder under metal-free conditions is described.![]()
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