Question
Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is
-
CH3COOCH3
-
CH3CONH2
-
CH3COOCOCH3
-
CH3COCl
Solution
D.
CH3COCl
Lesser the electron density of acyl carbon atom, more will be the susceptibility of a nucleophile to attack it.
The Cl atom has strong - I effect and weakest +R effect because of the weak π-bond between the small sized C- atom and large sized Cl atom. Thus, in CH3COCl, acyl carbon has least electron density and hence, more susceptible for nucleophilic attack.