From triazoles to imidazolines through the sequential N-H insertion of α-imino rhodium-carbenes into β-enamino esters/enamine-imine tautomerization/conjugate addition cascade

Article abstract of DOI:10.1021/jo501785d

A rhodium(II)-catalyzed denitrogenative coupling of N-sulfonyl-1,2,3-triazoles with ambiphilic β-enamino esters affords 2,5-dihydro-1H-imidazoles (3-imidazolines) with broad functional group tolerance. Mechanistic studies using a deuterium-labeled triazol