Reaction of 1-(4-methylphenyl)-5-phenyl-2,3-dihydro-1H-pyrrole-2,3-dione with tris(diethylamino)phosphine. A new synthesis of 3,3′-bipyrrolylidene-2,2′-dione derivatives

Abstract

Heterocyclic α-diketones are used as starting materials for the synthesis of new heterocyclic compounds possessing useful properties, from those exhibiting specific biological activity to new functional materials [1–3]. A particular place is occupied by pyrrole-2,3dione and 3,3′-bipyrrolylidene derivatives which have recently found increasing application in the preparation of synthetic analogs of natural chromophore systems [4], as well as in organic semiconducting and photovoltaic devices [5].