Which of the following carbanion expected to be most stable?

Question

Which of the following carbanion expected to be most stable? (A) p-NO2C6H4 overset-CH2 (B) o-NO2C6H4 overset-CH2 (C) o-CHOC6H4 overset-CH2 (D) p-CHOC6H4 overset-CH2

Tardigrade Admin · Accepted Answer

Carbanions are stabilised by electron withdrawing groups. - NO2 is stronger electron withdrawing group as compared to - CHO. At ortho-position, the effect is more pronounced.

Q. Which of the following carbanion expected to be most stable?

$p$ - $N O_{2} C_{6} H_{4} C - H_{2}$

$o$ - $N O_{2} C_{6} H_{4} C - H_{2}$

$o$ - $C H O C_{6} H_{4} C - H_{2}$

$p$ - $C H O C_{6} H_{4} C - H_{2}$

Carbanions are stabilised by electron withdrawing groups. - $N O_{2}$ is stronger electron withdrawing group as compared to - $C H O$ . At ortho-position, the effect is more pronounced.

Q. Which of the following carbanion expected to be most stable?

p-NO2​C6​H4​C−H2​

o-NO2​C6​H4​C−H2​

o-CHOC6​H4​C−H2​

p-CHOC6​H4​C−H2​

Carbanions are stabilised by electron withdrawing groups. - NO2​ is stronger electron withdrawing group as compared to - CHO. At ortho-position, the effect is more pronounced.

$p$ - $N O_{2} C_{6} H_{4} C - H_{2}$

$o$ - $N O_{2} C_{6} H_{4} C - H_{2}$

$o$ - $C H O C_{6} H_{4} C - H_{2}$

$p$ - $C H O C_{6} H_{4} C - H_{2}$

Carbanions are stabilised by electron withdrawing groups. - $N O_{2}$ is stronger electron withdrawing group as compared to - $C H O$ . At ortho-position, the effect is more pronounced.