Among the following the order of reactivity towards nucleophilic addition is

Among the following the order of reactivity towards nucleophilic addition is
  1. $\mathrm{CH}_3 \mathrm{CHO}>\mathrm{CH}_3 \mathrm{COCH}_3>\mathrm{HCHO}$
  2. $\mathrm{HCHO}>\mathrm{CH}_3 \mathrm{CHO}>\mathrm{CH}_3 \mathrm{COCH}_3$
  3. $\mathrm{CH}_3 \mathrm{CHO}>\mathrm{HCHO}>\mathrm{CH}_3 \mathrm{COCH}_3$
  4. $\mathrm{CH}_3 \mathrm{COCH}_3>\mathrm{CH}_3 \mathrm{CHO}>\mathrm{HCHO}$

Solution

Presence of alkyl group in carbonyl compounds decreases their reactivity towards nucleophilic addition. Further greater the number of such groups lesser will be the reactivity towards nucleophilic addition $\therefore$ correct order is

Asked in: MHT CET Full Test 4

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