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Topic: Dibromobenzene synthesis  (Read 6490 times)

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Offline sprotz

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Dibromobenzene synthesis
« on: November 12, 2008, 09:23:26 AM »

Hello,
Can anyone please tell me the methods for the synthesis of  Dibromobenzene. It is very hard to find this data on the internet.   

Offline sjb

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Re: Dibromobenzene synthesis
« Reply #1 on: November 12, 2008, 09:48:09 AM »
Which isomer?

Offline Two00proof

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Re: Dibromobenzene synthesis
« Reply #2 on: November 12, 2008, 10:33:00 AM »
In addition to the "what isomer" question, what starting material are you wanting to use?

Offline sprotz

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Re: Dibromobenzene synthesis
« Reply #3 on: November 15, 2008, 10:58:11 AM »
P-dibromobenzene, from phenol possibly.

Offline agrobert

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Re: Dibromobenzene synthesis
« Reply #4 on: November 15, 2008, 06:06:09 PM »
From benzene, Br2 HOAc. To get bromobenzene.  Then ZnBr2 to get p-bromobenzene as the major isomer.

Or from aniline, NBS, HOAc to get p-bromoaniline.  Then diazotonization of aniline with NaNO2 and subtitution with NaBr to get p-bromobenzene.

From phenol is tricky.  Give it a shot?
In the realm of scientific observation, luck is only granted to those who are prepared. -Louis Pasteur

Offline sprotz

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Re: Dibromobenzene synthesis
« Reply #5 on: November 16, 2008, 04:35:58 AM »
Thanks, that information more than helped.

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