First slide
Alkynes
Question

There are two paths to prepare compound (A) (2-methylhex-1-en-3-yne). which of the following statements is correct?

Difficult
Solution

In path I, SN2 reaction is not possible because RX is unreactive vinyl bromide. In Path II, nucleophilic addition reaction is favoured-anion 

is a strong nucleophile-to give the product which on dehydration gives compound A.

    

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