Aksenov AV, Aksenov NA, Arutiunov NA, Malyuga VV, Ovcharov SN, Rubin M. Electrophilically activated nitroalkanes in reaction with aliphatic diamines en route to imidazolines.
RSC Adv 2019;
9:39458-39465. [PMID:
35540681 PMCID:
PMC9076073 DOI:
10.1039/c9ra08630g]
[Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/25/2019] [Indexed: 01/15/2023] Open
Abstract
A novel synthetic methodology for the assembly of imidazolines via an unusual reaction between nitroalkanes and aliphatic 1,2-diamines in the presence of phosphorous acid is described. In contrast to the related highly efficient preparation of benzimidazoles from aromatic amines, this process represents a major synthetic challenge and for a long time was elusive. Analysis of the method limitations is provided.
Imidazolines were assembled via an unusual reaction between nitroalkanes and aliphatic 1,2-diamines in the presence of phosphorous acid.![]()
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