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Question

What would be the major product in each of the following reactions?
1722515_5d801a06f4cf4eef9deeab550ebd6411.jpg

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Solution

Lindlar’s catalyst is a palladium catalyst poisoned

with lead and quinoline. Due to this, it can only

reduce alkynes .

It reduces alkynes to give the Z (“Cis”) alkene.

Hence the reaction will give the main product as

cis-alkene.


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