Organohalides:Organic compounds containing at least one halogen (fluorine, chlorine, bromine, or iodine) atom attached to carbon, often involved in reactions with nucleophiles like carbanions.
Nucleophile:A chemical species that donates an electron pair to form a chemical bond in relation to an electrophile; it's essentially the "hugger" in reaction mechanisms.
Grignard Reagent:A reagent formed by the reaction of magnesium metal with alkyl or aryl halides, which acts as a strong nucleophile and can form carbanions upon reacting with certain substances