First slide

Reactive intermediates

Question

Most stable carbanion of the following is

Moderate

A

$\bar{C} H_{3}$
B

${CH}_{3} - \bar{C} H_{2}$
C

${CH}_{3} - {CH}_{2} - \bar{C} H_{2}$
D

${CH}_{3} - {CH}_{2} - {CH}_{2} - \bar{C} H_{2}$

Solution

Electron donating power increases with increase in the size of alkyl group ;
Electron donating groups destabilize the negative charge by intensifying the charge.

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