metalcarbanion
A metalcarbanion is an organometallic compound containing a carbon atom that is formally bonded to a metal atom and carries a negative charge. This negative charge on the carbon atom makes it nucleophilic and basic. The stability and reactivity of metalcarbanions depend heavily on the nature of the metal, the structure of the organic group, and the solvent.
Alkylmetal compounds, such as Grignard reagents (RMgX) and organolithium compounds (RLi), are common examples of metalcarbanions.
Metalcarbanions are versatile synthetic intermediates in organic chemistry. They readily react with electrophiles, such as carbonyl