Kinetics and equilibrium constants for reactions of α-phenyl-substituted cyclopropylcarbinyl radicals
…, FN Martinez, C Tronche, M Newcomb
Index: Halgren, Thomas A.; Roberts, John D.; Horner, John H.; Martinez, Felix N.; Tronche, Christopher; Newcomb, Martin Journal of the American Chemical Society, 2000 , vol. 122, # 13 p. 2988 - 2994
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Citation Number: 61
Abstract
Laser-flash photolysis methods were used to determine Arrhenius functions for cyclizations of the 4, 4-diphenyl-3-butenyl (2) and trans-4-phenyl-3-butenyl (5) radicals to the 1, 1- diphenylcyclopropylcarbinyl (1) and 1-phenylcyclopropylcarbinyl (4) radicals, respectively. At 20° C, the cyclization rate constants are 1.7× 107 and 5.4× 106 s-1. Equilibrium constants for the two processes were estimated and evaluated with thermochemical data and via ...
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