Hydrogenation of Alkynes to Alkanes using Pd/C

by James

Description: Palladium on carbon (Pd/C) catalyzes the addition of hydrogen to C–C multiple bonds. For alkynes, this reaction will occur twice to give alkanes.
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{ 5 comments… read them below or add one }

suwedi December 12, 2011 at 2:54 pm

nice work

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Alexandria Horner November 18, 2012 at 12:00 am

if there are more than one multiple bonds in a structure, how do you know which one undergoes the reaction?

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james November 19, 2012 at 11:18 am

Depends on the type of multiple bonds. For alkenes, the order of reactivity is that the more alkyl groups are attached to the alkene, the more reactive it will be towards hydrogenation. If you have electron withdrawing groups attached to the alkene, they will also be less reactive towards hydrogenation.
Essentially, the more electron-rich the alkene, the more reactive it will be towards hydrogenation.

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Kat May 27, 2013 at 10:53 pm

Just an FYI the middle of the page you have accidentially typed in mechanisms when it should state Examples .

You are doing an amazing job thank you so much for these references!

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james May 29, 2013 at 4:47 pm

Thank you!

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