$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,C{H_3}} \\
| \\
{C{H_3} - C - OH} \\
| \\
{\,\,\,\,\,C{H_3}}
\end{array}$
એ $ 3^o$ આલ્કોહોલ છે.
તૃતિયક આલ્કોહોલ હાઇડ્રોજન હેલાઇડ સાથે સૌથી ઝડપથી પ્રક્રિયા કરે છે.
$\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - C{H_2} - C{H_2} - OH}
\end{array}\,$ ${\xrightarrow[{Pyridine{\kern 1pt} cold}]{{Cr{O_3}}}}$ નીપજ
${C_3}{H_7}OH\,\xrightarrow{{{H_2}S{O_4}}}X\,\xrightarrow{{B{r_2}}}\,Y\xrightarrow{{KOH}}Z$