Abstract
A novel and efficient method for the synthesis of a new variety of novel N -arylsulfonylamino derivatives of biheterocycles by the reaction of N -cyanoaceto-arylsulphonylhydrazides with f , g -unsaturated nitriles. The synthetic potential of the method is demonstrated. \centerline{\epsfbox{:art:s-fig-01a.eps}\hspace*{2pc}\epsfbox{:art:s-fig-01b.eps}\hspace*{2pc}\epsfbox{:art:s-fig-01c.eps}}