# Which of the following alkenes will react fastest with $H_2$ under catalytic hydrogenation conditions ?

## 1 Answer

During catalytic hydrogenation , The hydrogene are transferred from the catalyst to the same side of the double bond.
Evidently , small the number of R-substituents , lesser is the steric hindrance and hence faster is the rate of hydrogenation.
thus the option (a) with two groups on the same side of the molecule is correct.
Hence a is the correct answer.
answered Feb 26, 2014 by

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