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The chlorination of α-chloroethylbenzene. I

✍ Scribed by Galitzenstein, E. ;Woolf, C.

Publisher
Wiley (John Wiley & Sons)
Year
1950
Weight
433 KB
Volume
69
Category
Article
ISSN
0368-4075

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✦ Synopsis

Abstract

The action of various catalysts in the chlorination of α‐chloro‐ethylbenzene has been studied. Although the use of ferric chloride, antimony pentachloride and titanic chloride leads to decomposition with the evolution of hydrogen chloride, nuclear substitution takes place readily in the presence of stannic chloride. Iodine also has been found to be a very powerful and efficient catalyst, 0.25% being sufficient for the chlorination at room temperature. A surprising feature of the iodine‐catalysed chlorination is that part of the chlorine reacts by addition to the benzene nucleus; the pyrolysis of the chlorination product to split off hydrogen chloride, leaving normal nuclear‐chlorinated benzene derivatives, has also been investigated.

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