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Topic: Why does the methyl become a wedge?  (Read 3459 times)

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Offline noor123

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Why does the methyl become a wedge?
« on: October 13, 2014, 11:20:33 AM »
I understand the mechanism of the antimarkovnikov addition due to the peroxide, but i dont understand why the methyl group is the wedge and not the Br?

Offline zsinger

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Re: Why does the methyl become a wedge?
« Reply #1 on: October 13, 2014, 01:00:54 PM »
Does it matter?  :)
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Offline noor123

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Re: Why does the methyl become a wedge?
« Reply #2 on: October 13, 2014, 01:05:55 PM »
Im not sure...

Offline kriggy

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Re: Why does the methyl become a wedge?
« Reply #3 on: October 13, 2014, 01:26:10 PM »
I think it could easily be dashed too (is dashed the proper term used in this case? :D)

Offline Irlanur

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Re: Why does the methyl become a wedge?
« Reply #4 on: October 13, 2014, 03:50:23 PM »
there's no chiral information at the carbon with the bromine. But without a chiral reagent, the product would be a racemat

Offline C-hemCards

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Re: Why does the methyl become a wedge?
« Reply #5 on: October 13, 2014, 09:17:50 PM »
Yep, that should not be drawn like that. There should be no stereochemical information contained in that product structure.
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Offline Babcock_Hall

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Re: Why does the methyl become a wedge?
« Reply #6 on: October 15, 2014, 05:02:16 PM »
I understand the mechanism of the antimarkovnikov addition due to the peroxide, but i dont understand why the methyl group is the wedge and not the Br?
The Br atom is not on a stereogenic carbon atom.  It would make no sense to put a wedge there.  The carbon atom with the methyl group is a stereogenic center.  I might be tempted to draw the product in such as way as to indicate that it is a racemic mixture.

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