Carbanions | Reactive Intermediate |

• Carbon atom carries one nit negative charge.
• eight electrons in valance shell i.e valance shell.
• formed by heterolytic cleavage.
• Sp³ hybridized.
• pyramidal shaped.
• it may be primary, secondary and tertiary carbanion.

Reactivity : 3⁰ > 2⁰ > 1⁰ > CH3 ^–

Stability : 3⁰ < 2⁰ < 1⁰ < CH3 ^–

Generation of carbanions

• reduction of C – x bond with metal.
• Deprotonation from a C – H bond.
• Reaction of metal with an alkene
• a negative ion adds to a carbon – carbon double or triple bond.

Carbanions increases in stability with an increase in the amount of s character at the carbanionic carbon.