$\xrightarrow[{(ii)\,C{H_3}C{H_2}Br}]{{(i)\,NaN{H_2}\,/\,liq.\,N{H_3}}}\,Y$
પ્રક્રિયામાં $X$ અને $Y$ ....... છે.
$C{{H}_{3}}-C{{H}_{2}}-C\equiv CH\xrightarrow[liq.\,N{{H}_{3}}]{Na\,N{{H}_{2}}/}$ $C{{H}_{3}}-C{{H}_{2}}-C\equiv C\,Na\xrightarrow[-NaBr]{C{{H}_{3}}C{{H}_{2}}-Br}$ $\underset{3-Hexyne}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C\equiv C-C{{H}_{2}}-C{{H}_{3}}}}\,$

$C{{H}_{3}}\,-\,\,\overset{\overset{C{{H}_{3}}}{\mathop{|}}\,}{\mathop{C}}\,H\,\,-\,\,C{{H}_{3}}(excess)\,\,+\,\,B{{r}_{2}}\,\xrightarrow{hv}$
$\,\,\,\,C{{H}_{3}}\,-\,\,\overset{\overset{C{{H}_{3}}}{\mathop{|}}\,}{\mathop{\underset{\underset{Br}{\mathop{|}}\,}{\mathop{C}}\,}}\,\,\,-\,\,C{{H}_{3}}\,+\,\,C{{H}_{3}}\,-\,\,CH\,\,-\,\,C{{H}_{2}}\,-\,\,Br$