What will be the major product when m-cresol is reacted with propargyl bromide

Question:

What will be the major product when m-cresol is reacted with propargyl bromide

$\left(\mathrm{HC} \equiv \mathrm{C}-\mathrm{CH}_{2} \mathrm{Br}\right)$ in present of $\mathrm{K}_{2} \mathrm{CO}_{3}$ in acetone


Correct Option: , 4

Solution:

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