Three structurally analogous radical clock substrates with a 100-fold span in their rearrangement rates are hydroxylated by the diiron oxygenase AlkB to afford similar amounts of rearranged and unrearranged products. Such a result is predicted by a mechanistic scheme by which radical rebound competes with cage escape of the geminate substrate radical. The results show that radical clocks can measure both the radical life-time and the kinetics of cage escape.
BANWELL M. G.; HALTON B., AUSTRAL. J. CHEM., 1980, 33, NO 10, 2277-2290
作者:BANWELL M. G.、 HALTON B.
DOI:——
日期:——
Banwell, Martin G.; Halton, Brian, Australian Journal of Chemistry, 1980, vol. 33, # 10, p. 2277 - 2290
作者:Banwell, Martin G.、Halton, Brian
DOI:——
日期:——
Cage Escape Competes with Geminate Recombination during Alkane Hydroxylation by the Diiron Oxygenase AlkB
作者:Rachel N. Austin、Kate Luddy、Karla Erickson、Marilla Pender‐Cudlip、Erin Bertrand、Dayi Deng、Ryan S. Buzdygon、Jan B. van Beilen、John T. Groves
DOI:10.1002/anie.200801184
日期:2008.6.27
Three structurally analogous radical clock substrates with a 100-fold span in their rearrangement rates are hydroxylated by the diiron oxygenase AlkB to afford similar amounts of rearranged and unrearranged products. Such a result is predicted by a mechanistic scheme by which radical rebound competes with cage escape of the geminate substrate radical. The results show that radical clocks can measure both the radical life-time and the kinetics of cage escape.