Hydrocarbons 2 Question 49
52. Acetylene is treated with excess sodium in liquid ammonia. The product is reacted with excess methyl iodide. The final product is …… .
$(1983,1 \mathrm{M})$
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Solution:
- 2-butyne :
$\mathrm{H}-\mathrm{C} \equiv \mathrm{C}-\mathrm{H}+\underset{\text { excess }}{\mathrm{Na}} \longrightarrow \stackrel{+}{\mathrm{Na}} \overline{\mathrm{C}} \equiv \mathrm{C}^{-} \mathrm{Na}^{+} \xrightarrow[\text { excess }]{\mathrm{CH}_{3} \mathrm{I}}$
$\mathrm{CH}{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{CH}{3}$
