Utility of sulphones in heterocyclic synthesis: Synthesis of some pyridine, chromene and thiophene derivatives

Abstract

Phenylsulfonylacetonitrile (1) when reacted with α,β-unsaturated nitriles (2a,b) and/or 2-hydroxynaphthaldehyde yields pyridine derivatives (3a,b) and / or the imino-chromene derivative (4) respectively. The behavior of (1) towards some α-halogenated compounds has been investigated.