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Hydrocarbons — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons1 Mark
Question
Name the reagent used in the following changes
$\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{C}\equiv\text{C}-\text{CH}_2-\text{CH}_2-\text{CH}_2\\-\text{CH}_3\xrightarrow{?}\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\\\text{C}=\text{C}-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_3\\ \ | \ \ \ \ \ \ \ |\\ \text{H} \ \ \ \ \ \text{H}$
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Answer

$\mathrm{H}_2 / \mathrm{Pd}-\mathrm{BaSO}_4$ is used. It is called Lindlar's catalyst. Syn addition takes place i.e., both hydrogen atom attack from same side.

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