Fluorocarbon derivatives of nitrogen. Part VII [1]. Reaction of N-iminopyridinium ylide with perfluoro-1-azacyclohexene,perfluoro-2-azapropene,and perfluoroacetonitrile
Chemistry Department, The University of Manchester Institute of Science and Technology, Manchester M60 1QD Great Britain
Abstract:
The novel ylides (II) and (III) have been obtained treatment of perfluoro-1-azacyclohexene and perfluoro-2-azapropene, respectively, with -iminopyridinium ylide (I) generated from -aminopyridinium iodide and anhydrous potassium carbonate in methylene chloride. A mixture of the -triazolo1,5-]pyridine (IV) and a compound thought to be its dihydro-analogue (V) were isolated following attack on perfluoroacetonitrile by the parent ylide (I); the former product was also prepared by heating 1,2-diamino-pyridinium iodide with trifluoroacetic anhydride.