Kinetics and Mechanism of Monomolecular Heterolysis of Commercial Organohalogen Compounds: XL. Nature of Salt Effects in Dehydrobromination of 3-Bromocyclohexene in γ-Butyrolactone. Role of Solvation Effects of Dipolar Aprotic Solvents |
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Authors: | N E Ponomarev M V Stambirskii G F Dvorko |
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Institution: | (1) Kiev Polytechnic Institute, National Technical University of Ukraine, Kiev, Ukraine |
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Abstract: | The influence of neutral salts on the rate of heterolysis of 3-bromocyclohexene at 31°C in γ-butyrolactone was studied by the verdazyl method; ν = kC6H9Br], E1 mechanism. Additions of lithium picrate do not affect the reaction rate; those of LiClO4 and Et4NClO4 increase it; and those of LiCl, Et4NCl, and KNCS decelerate the reaction. The nature of salt and solvation effects in the heterolysis of 3-bromocyclohexene in γ-butyrolactone, MeCN, and PhNO2 is discussed.__________Translated from Zhurnal Obshchei Khimii, Vol. 75, No. 6, 2005, pp. 937–944.Original Russian Text Copyright © 2005 by Ponomarev, Stambirskii, Dvorko. |
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