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The participation of aromatic neighboring groups in gas-phase elimination reactions

✍ Scribed by Jose A. Hernandez A.; Gabriel Chuchani

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
373 KB
Volume
10
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

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:
and for p‐methoxy‐2‐chloroethylbenzene:
The presence of phenyl substituents in the β position of ethyl chloride has been found to provide anchimeric assistance in these elimination reactions.

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