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Do we use anhydrous ZnCl2 with HBr and HI in the formation of haloalkanesfrom aalcohols?

Do we use anhydrous ZnCl2 with HBr and HI in the formation of haloalkanesfrom aalcohols?

Grade:12th pass

1 Answers

Vikas TU
14149 Points
7 years ago
Lewis acids are favoured instead of using hydrohalic acids directly and Cl is considered as a better nucleophile than Br and I due to bulky size and it makes the -OH group a better leavaing ability group too.
Reaction with alcohols the Lewis acid forms a complex as: [Zn(OH)Cl2]-

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