Five-membered 2,3-dioxoheterocycles: LXXIX. Three-component condensation of 1H-pyrrol-2,3-diones with acetonitriles and dimedone. Crystal and molecular structure of substituted spiro[chromene-4,3′-pyrrole]

Abstract

5-Phenyl-4-ethoxycarbonyl-1H-pyrrole-2,3-diones react with acetonitriles and dimedone to form ethyl 2-amino-7,7-dimethyl-2',5-dioxo-5'-phenyl-1',2',5,6,7,8-hexahydrospiro[chromene-4,3'-pyrrole]-4'-carboxylates. The crystal and molecular structure of ethyl 2-amino-1'-benzyl-7,7-dimethyl-2',5-dioxo-5'-phenyl-3-cyano-1 ',2',5,6,7,8-hexahydrospiro[chromene-4,3'-pyrrole]-4'-carboxylate was proved by XRD analysis.