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Topic: Help with alkylhalide reactions.  (Read 2090 times)

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Offline perivar

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Help with alkylhalide reactions.
« on: October 30, 2012, 06:33:58 PM »
In a laboratory experiment i am to synthesise three alkyhalides, 1 - bromopropane, 2 - bromobutane and 2 - bromo - 3 - methylpropane from their respective alcohols with HBr. After refluxing and distillation, one is to wash 1 - bromopropane and 2 - bromobutane with 1/5 of their volume with HCl in a separation funnel, but not with 2 - bromo - 3 - methylpropane. I tried to figure out that by washing with HCl, one would extract out the water from the alkylhalids, but with if HCl is washed with 2 - bromo - 3 - methylpropane, one would get by - products from substitution, but i am not sure on this.

Offline perivar

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Re: Help with alkylhalide reactions.
« Reply #1 on: October 30, 2012, 07:57:14 PM »
In a laboratory experiment i am to synthesise three alkyhalides, 1 - bromopropane, 2 - bromobutane and 2 - bromo - 3 - methylpropane from their respective alcohols with HBr. After refluxing and distillation, one is to wash 1 - bromopropane and 2 - bromobutane with 1/5 of their volume with HCl in a separation funnel, but not with 2 - bromo - 3 - methylpropane. If HCl is washed with 2 - bromo - 3 - methylpropane, one would get by - products from substitution, but i am not sure on this.

Offline discodermolide

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Re: Help with alkylhalide reactions.
« Reply #2 on: October 30, 2012, 08:42:14 PM »
So what is your question?
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Offline perivar

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Re: Help with alkylhalide reactions.
« Reply #3 on: October 31, 2012, 04:12:46 AM »
So what is your question?

Why not washing 2 - bromo - 2 - methylpropane with HCl?

Offline discodermolide

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Re: Help with alkylhalide reactions.
« Reply #4 on: October 31, 2012, 04:18:11 AM »
I would think it would hydrolyse to t-butanol and/or give isobutylene.
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