April 19, 2024, 07:05:12 PM
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Topic: Diene Hydrogenation  (Read 899 times)

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Offline sharbeldam

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Diene Hydrogenation
« on: October 10, 2019, 03:36:13 AM »
If we do the hydrogenation/Ni on an alkene, it removes the double bond and adds two hydrogens, and if i have conjuagted diene with 1 mol of H2, does the mechanism change? because in the powerpoint presentation, the product has 1 double left (which makes sense) but it changes position.
for example 1,3 buta-diene + H2/Ni -> 2-Butene

Why does it change position? anyone have a link or book reference for this reaction
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Offline chenbeier

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Re: Diene Hydrogenation
« Reply #1 on: October 10, 2019, 07:17:29 AM »
In conjugated systems, during addition  the doublebond can flip. Normaly the result is a mixture of 1- and 2-Butene.

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https://www.uibk.ac.at/organic/micura/teaching/grundlagen-organische-chemie/download/ocphkap10.pdf

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