What Is a Carbanion?

Carbon anion is a three-group, carbon-active intermediate with a pair of lone electrons, and a unit of negative charge. Tetrahedron configuration. The lone pair of electrons occupies a hybrid orbit. Compare the acidity of the corresponding acids to determine the stability of the negative ions.

Carbanions are negatively charged with an even number

General carbanion

The carbanion is negatively charged and the central carbon atom is trivalent.

1. The hybridization orbital electronegativity order is

>

>

. The greater the electronegativity, the stronger its electron-drawing ability, so the stability of carbanions is as follows: tertiary carbanions> secondary carbanions> primary carbanions; if the carbanions are more stable, their RH acidity is stronger.

By comparing the acidity of the corresponding acids, the stability of the carbanions can be roughly judged.

Generally, a carbanion having a group capable of stabilizing a negative charge has higher stability. These groups can be phenyl,

Carbanions play an extremely important role in organic synthesis. It participates in many important organic synthesis reactions, such as: ester condensation, aldol condensation, witting reaction, Michael addition and so on. Understanding carbanions helps us understand the nature of proper organic synthesis. ^[1]