Novel heterocyclic construction via dipolar cycloadditions to 1,2-dicarbonyl compounds

Abstract

The reactivity of o-quinones and other 1,2-diones towards a variety of dipolar species viz-, nitrile oxides, carbonyl ylides, betaines and mesoionic compounds has been investigated. In most cases, these reactions occur with the participation of C=O group as the dipolarophile leading to the synthesis of novel heterocyclic compounds