Jayram J, Jeena V. An iodine/DMSO-catalyzed sequential one-pot approach to 2,4,5-trisubstituted-1
H-imidazoles from α-methylene ketones.
RSC Adv 2018;
8:37557-37563. [PMID:
35558600 PMCID:
PMC9089320 DOI:
10.1039/c8ra07238h]
[Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/01/2018] [Indexed: 01/08/2023] Open
Abstract
A sequential one-pot approach to 2,4,5-trisubstituted imidazoles has been developed from α-methylene ketones and aldehydes. This methodology employs air-moisture stable reaction conditions and an inexpensive iodine/DMSO system affording a diverse range of known and novel (substrate scope) 2,4,5-trisubstituted imidazoles in moderate to excellent yields. The iodine/DMSO system was extended to the domino convergent synthesis of two functionalized intermediates, benzil and benzaldehyde, to produce the final product.
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