કેન્દ્રાનુરાગી યોગશીલ પ્રક્રિયા માટે યોગ્ય ક્રમ કયો છે

$(1)$ $\begin{matrix}
O \\
|| \\
{{C}_{6}}{{H}_{5}}-C-{{C}_{6}}{{H}_{5}} \\
\end{matrix}$

$(2)$ $C _{6} H _{5}- CHO$

$(3)$ $p - CH _{3}- C _{6} H _{4}- CHO$

$(4)$ $p - CH _{3} O - C _{6} H _{4}- CHO$

Question

કેન્દ્રાનુરાગી યોગશીલ પ્રક્રિયા માટે યોગ્ય ક્રમ કયો છે

$(1)$ $\begin{matrix}
O \\
|| \\
{{C}_{6}}{{H}_{5}}-C-{{C}_{6}}{{H}_{5}} \\
\end{matrix}$

$(2)$ $C _{6} H _{5}- CHO$

$(3)$ $p - CH _{3}- C _{6} H _{4}- CHO$

$(4)$ $p - CH _{3} O - C _{6} H _{4}- CHO$

A$2 > 3 > 4 > 1$
B$4 > 3 > 2 > 1$
C$2 > 1 > 3 > 4$
D$4 > 2 > 3 > 1$

AIIMS 2019, Medium

Download our app for free and get started

Solution

a
For nucleophilic addition reaction, all aldehydes are more reactive than ketones. The reactivity decreases as $+ I$ and $+M$ effect increases. The aldehyde $p - CH _{3}- C _{6} H _{4}- CHO$ shows $+ I$ effect and $p - CH _{3} O - C _{6} H _{4}- CHO$ shows $+ M$ effect. They both decrease the reactivity towards nucleophilic addition reaction.

Therefore, the correct order is as follows :

$2 > 3 > 4 > 1$

Download our app
and get started for free

Similar Questions

Download our appand get started for free

Similar Questions

Download our app
and get started for free