Zhao MN, Yang ZM, Li LQ. DMF as an amine source: iron-catalyzed cyclization of 2
H-azirines to imidazoles.
Chem Commun (Camb) 2024. [PMID:
38258986 DOI:
10.1039/d3cc06147g]
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Abstract
A novel method has been developed for the synthesis of 1-methyl-4,5-diaryl-1H-imidazoles through Fe(II)-catalyzed cyclization of 2H-azirines and N,N-dimethylformamide (DMF) as an amine source. This transformation involves the cleavage of C-N and CN double bonds and the construction of new C-N and CN double bonds. The reaction has readily available starting materials, a wide range of substrates and mild reaction conditions. In addition, the reaction also facilitated the convenient synthesis of 1-methyl-2,4,5-triaryl-1H-imidazoles.
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