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Which of the following is least stable ?...

Which of the following is least stable ?

A

`Me - O- overset (Ө) CH_2`

B

C

`PhC overset (Ө) H_2`

D

.

Text Solution

Verified by Experts

The correct Answer is:
A
(a) In `(b),( c)` and `(d)`, carbanion is stabilished by resonance, but in `(a)` it is not stabilished. Moreove, `(+ I)` effect of `(Me)` group destabilises the carbanion in `(a)`.
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