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Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

(a) Mecocl

(b) MeCHO

(c) MeCOOMe

(d) MeCOOCOMe

1 Answer

Among aldehydes and acid derivatives, acid chlorides are most susceptible to nucleophilic attack because of strong -I effect and weak +R effect of Cl atom, due to this the carbonyl carbon has highest electron deficiency .
Hence order is $ MeCOCl > MeCOOCOMe > MeCOOMe > MeCHO$
Hence a is the correct answer.
answered Feb 21, 2014 by meena.p
 

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