6533b82dfe1ef96bd1291395

RESEARCH PRODUCT

A Photochemical One-Pot Three-Component Synthesis of Tetrasubstituted Imidazoles

Stefan PuschTill Opatz

subject

chemistry.chemical_compoundReaction mechanismchemistryComponent (thermodynamics)Organic ChemistryCondensationPhysical and Theoretical ChemistryIsoxazoleCleavage (embryo)Ring (chemistry)PhotochemistryBiochemistry

description

Tetrasubstituted imidazoles can be formed in a photochemical one-pot synthesis from aldehydes, α-aminonitriles, and isoxazoles. Condensation of the first two components produces α-(alkylideneamino)nitriles which react under basic conditions with the acylazirines formed in situ by photochemical ring transformation of the isoxazole component. This process includes an unusual cleavage of the C(2)-C(3) bond of the acylazirine. The reaction mechanism was studied by DFT calculations.

https://doi.org/10.1021/ol502667h