Three-Component Reaction Between Substituted 2-(2-Nitrovinyl)-phenols, Acetylenedicarboxylate and Amines: Diversity-Oriented Synthesis of Novel Pyrrolo[3,4-c]coumarins.

An efficient and straightforward synthetic protocol has been developed for the preparation of pyrrolo[3,4-c]coumarins via FeCl3-promoted three component reaction between substituted 2-(2-nitrovinyl)phenols, acetylenedicarboxylate and amines for the generation of a wide range of structurally interesting and pharmacologically significant compounds.