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Hydrogenation of Alkynes

2-hexyne give...

Question

2-hexyne gives trans-2-hexene on treatment with:

A

P t / H_{2}

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B

L i / N H_{3}

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C

P d / B a S O_{4}

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D

L i A l H_{4}

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Solution

The correct option is B $L i / N H_{3}$
2-hexyne with $L i / N H_{3}$ gives trans-2-hexene. This reaction is also considered as Birch reduction.

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