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Polycondensation of benzyl chloride and its derivatives: A study of the reaction at different temperatures

โœ Scribed by Montaudo, G. ;Finocchiaro, P. ;Caccamese, S. ;Bottino, F.

Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
569 KB
Volume
8
Category
Article
ISSN
0449-296X

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โœฆ Synopsis

Abstract

The polycondensation reactions of benzyl chloride, ฮฑโ€chloroethylbenzene, and benzhydryl chloride in the presence of SnCl~4~ or AlCl~3~ as catalysts have been investigated in the temperature range between +80ยฐ and โˆ’135ยฐC. Polycondensations of benzyl chloride and ฮฑโ€chloroethylbenzene are quite similar in the reaction kinetics and are thought to occur by the same displacement mechanism. Polycondensation of benzhydryl chloride, however, seems to involve the formation of benzhydryl carbonium ions. At low temperatures linear polymers tend to be formed, in contrast with branched polymers produced at room temperature. Steric effects are found to play a major role in protecting polymers from branching at lower temperatures.

Polybenzyl polymers are found to be less linear than poly(โ€ฮฑโ€methylbenzyl), even when prepared at โˆ’135ยฐC.

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