A laser flash photolysis study of di-, tri- and tetrafluorinated phenylnitrenes; implications for photoaffinity labeling
- 1 March 1993
- journal article
- review article
- Published by American Chemical Society (ACS) in Bioconjugate Chemistry
- Vol. 4 (2) , 178-183
- https://doi.org/10.1021/bc00020a011
Abstract
Several fluorinated aryl azides (2,6 and 2,4-difluorophenyl azide, 2,4,6-triflurorophenyl azide, and methyl 4-azido-2,3,5,6-tetrafluorobenzoate) were studied by laser flash photolysis techniques. In each case, the azides from singlet nitrenes which can be intercepted with pyridine to form ylides. This allowed determination of the rate constant for ring expansion of the singlet nitrene to the dehydroazepine and measurement of the absolute rate constants for reaction of the singlet nitrenes with typical quenchers.Keywords
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