After 118 years, the isolation of two common radical anion reductants as simple, stable solids

Two common radical anion reductants, potassium benzophenone ketyl (K(Ph2CO)) and potassium naphthalenide (K-2(C10H8)(2)(THF)), have been isolated and characterized for the first time in solvent-free form or with low solvent content, allowing their use as pure solid reactants in preparative redox chemistry in accurate stoichiometric amounts.