Chemistry of nitrenes generated by the photocleavage of both azides and a five-membered heterocycle

A Albini, G Bettinetti, G Minoli

Index: Albini, A.; Bettinetti, G.; Minoli, G. Journal of the American Chemical Society, 1991 , vol. 113, # 18 p. 6928 - 6934

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Citation Number: 31

Abstract

Abstract: Pyrazolo [1, 2-a] benzotriazole and some of its derivatives (2a-c) are photochemically cleaved to form 24 1-pyrazolyl) phenylnitrenes, which are also obtained through a more conventional path by photodecomposition of the pyrazolylphenyl azides (la- c). Product studies and laser flash photolysis analysis of nitrenes from both sources show that there is competition between fast intramolecular reclosure to heterocycles 2 and ...