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Topic: Q. about birch reduction of benzene  (Read 5019 times)

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Offline pharm.M.H

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Q. about birch reduction of benzene
« on: November 18, 2008, 06:18:09 PM »
hello every body :)

i just asked to explain different birch product of two comp.

but i did not get a clear answer

so please i wanna a help or a hint to deal with it
the question is attached file

bye
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Offline azmanam

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Re: Q. about birch reduction of benzene
« Reply #1 on: November 18, 2008, 06:34:17 PM »
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Knowing why you got a question wrong is better than knowing that you got a question right.

Offline pharm.M.H

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Re: Q. about birch reduction of benzene
« Reply #2 on: November 19, 2008, 02:29:41 PM »
ok thanx
but i wanna to ask about the reason of the formation 1,4 diene but not 1,3 diene

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Offline Mitsunobo

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Re: Q. about birch reduction of benzene
« Reply #3 on: January 27, 2009, 04:09:58 PM »
1,3 diene can still be formed but majority will be 1,4. After the anion radical is formed, there are 2 resonance form that can lead to 1,4 diene and only 1 way for 1,3 diene.
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