Catalyst-free reaction of 2-(4H-benzo[d][1,3]oxazin-4-yl)acrylates: synthesis of 1,2-dihydroquinolines and 2,3-dihydropyrroles

Abstract

Catalyst-free annulations of 2-(4H-benzo[d][1,3]oxazin-4-yl)acrylates with sulfur ylides and α,β-unsaturated imines have been successfully achieved under mild conditions.