ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The gas-phase pyrolysis of 2-chloroethylbenzene and p-methoxy-2-chloroethylbenzene was studied in a static system over the temperature range of 411°-471°C and a pressure range of 39-202 mm Hg. The reactions in seasoned vessels, with the propene inhibitor always present, were homogeneous, first-order, and unimolecular. The rate constants are given by the Arrhenius equation for 2-chloroethylbenzene: \documentclass{article}\pagestyle{empty}\begin{document}$$ \log k(\sec ^{- 1}) = (13.07 \pm 0.35) - (220.9 \pm 4.6){\rm kJ/mol/2}{\rm .303}RT $$\end{document} and for p-methoxy-2-chloroethylbenzene: \documentclass{article}\pagestyle{empty}\begin{document}$$ \log k(\sec ^{- 1}) = (13.81 \pm 0.34) - (228.4 \pm 4.6){\rm kJ/mol/2}{\rm .303}RT $$\end{document} The presence of phenyl substituents in the β position of ethyl chloride has been found to provide anchimeric assistance in these elimination reactions.
Additional Material:
5 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550100903
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