$\underset{A}{\mathop{{{C}_{2}}C{{l}_{3}}OH}}\,$ $\rightarrow CC{{l}_{3}}-COOH$ ઍક $-CuO$ ગ્રૂપ હજાર છે
${{C}_{2}}{{H}_{5}}OH+C{{l}_{2}}\to C{{H}_{3}}CHO+2HCl$
$C{{H}_{3}}CHO+3C{{l}_{2}}\to {\mathop{CC{{l}_{3}}CHO}}\,+3HCl$
$(I) \;CH_2 = CH - OH $
$(II)\; CH_2 = CH - CH_2OH$
$(III)\;CH_3 - CH_2 - OH$
$(IV)\; \begin{matrix} C{{H}_{3}}-CH-C{{H}_{3}} \\ |\,\,\,\, \\ OH \\ \end{matrix}$