Question

Give reactivity order for decarboxylation ?
`CH_(3)-CH_(2)-COOH CH_(2)=CH-COOH CH-=C-COOH`
A. IgtIIgtIII
B. IIIgtIIgtI
C. IIIgtIgtII
D. None is correct

Answer 1

(B) In decarboxylation intermediates are,
`underset(I)(CH_(3)-CH_(2)^(O)) underset(II)(CH_(2)=CH^(ɵ))underset(III)(CH-=C^(ɵ))`
The stability order of carbanion -IIIgtIIgtI
So reactiviy order for acid is- IIIgtIIgtI