Phenylnitrene laser flash photolysis studies

Laser flash photolysis studies were performed on 2-cyano (8c), 4-cyano (8e) and 2,6-dicyanophenyl (8f) azide. The results are given in Table 6. In pentane the barrier to cyclization of orr/io-cyanophenylnitrene is the same, within experimental error, to that of parent phenylnitrene. The barrier to cyclization of 2,6-dicyanophenylnitrene (8f) is about 1 kcahmol larger than that of parent phenylnitrene ( PN). Variation of solvent has only a small effect on the kinetics. 

Schnapp, K. A., and Platz, M. S. (1993) A laser flash photolysis study of di-, tri- and tetrafluori-nated phenylnitrenes Implications for photoaffinity labeling. Bioconjugate Chem. 4,178— 183. 

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