A new approach to the 8b-azaacenaphthylene ring system†
Abstract
A stereoselective approach to the 8b-azaacenaphthylene ring system is described. This new route features a dichloroketene–enol ether [2 + 2] cycloaddition, a vinylogous Mannich reaction, and an aza-Prins cyclization as key stereoselective transformations.