\(2- \) બ્યુટેનોલ
\(\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2}C{H_3}} \end{array}\)
ઇથાઇલ મિથાઇલ કિટોન
$CH_3CHO$ $+$ $CH_2(COOH)_2$ $\xrightarrow {\Delta}$ $X$
$HC \equiv CH\mathop {\xrightarrow{{30\%\, {H_2}S{O_4}}}}\limits_{HgS{O_4}} A\xrightarrow{{NaOH}}B$