Collect. Czech. Chem. Commun. 1995, 60, 1065-1069

Synthesis of Heterocyclic Ketene N,S-Acetals and Their Reactions with α,β-Unsaturated Nitriles

Ahmed K. El-Shafei, Ahmed M. M. El-Saghier and Ahmed M. Soliman

Chemistry Department, Faculty of Sciences, Sohag, Egypt


Substituted 3H-pyrido[2,1-b]benzoxazoles and 3H-pyrido[2,1-b]benzothiazoles were prepared by base catalyzed cycloaddition of benzylidenemalonitrile with benzoxazolylidene- or benzothiazolylidenepentane-1,3-dione.