Journal of Physical Chemistry p. 412 - 419 (1994)
Update date:2022-08-11
Topics:
Marcinek, Andrzej
Platz, Matthew S.
Chan, Stephen Y.
Floresca, Rey
Rajagopalan, Krishnan
et al.
Laser flash photolysis (308 nm, 20 ns, 150 mJ) of 4-azido-2,3,5,6-tetrafluorobenzamides, esters, and thioesters generate singlet nitrenes which can be intercepted with pyridine to produce strongly absorbing ylides.It was possible to resolve the rate of formation of the ylides as a function of pyridine concentration.This has lad to direct measurements of the absolute rate constants of (a) the reaction of the nitrene with pyridine, (b) ring expansion of the nitrene to a ketenimine, and (c) singlet to triplet nitrene intersystem crossing.
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