PREPARATION AND SYNTHETIC APPLICATIONS OF IMINOPHOSPHORANES DERIVED FROM O-SUBSTITUTED ARYLAZIDES - PREPARATION OF PYRAZOLO[1,2-B]INDAZOLE,4H-3,1-BENZOXAZINE AND QUINOLINE DERIVATIVES - CRYSTAL-STRUCTURE OF 2-(4-METHOXYBENZOYLAMINO)PHENYL]-4-METHYLQUINOLINE

The Staudinger reaction of several ortho-substituted arylazides with t riphenylphosphine has been studied. The reaction product is found to b e strongly dependent on the nature of the ortho-substituent. The Aza W ittig-type reaction of iminophosphorane derived from the ortho-azido a cetophenone with isocyanates and aroyl chlorides leads to the previous ly unreported 4-methylene-4H-3,1-benzoxazine ring. The crystal and mol ecular structure of 2-(4-methoxybenzoylamino)phenyl]-4-methylquinoline has been established by X-Ray diffraction methods.