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■ Reactions with Thiohydantoins: A Novel Synthesis of Thiopyrano[2,3-d]imidazoles

Hamed A. Daboun, Mahfouz A. Abdel Aziz, and Fatma A. Abdel Aal

*Department of Chemistry, Faculty of Science, , University of Cairo, Giza, Egypt

Abstract

A novel synthesis of thiopyrano[2,3-d]imidazoles via reaction of acrylonitrile, ethyl acrylate and N-p-chlorophenylmaleimide with 5-arylidene-3-phenyl-4-thiohydantoins is reported. The reaction of acrylonitrile with hydantoins and 2-thiohydantoins is also reported and discussed.