Metallation Reactions. XVIII. Regioselective metallation of (alkylthio)benzenes by superbases

Article abstract of DOI:10.1016/0022-328X(92)83379-V

(Alkylthio)benzenes were monometallated at the alpha position by a stoichiometric mixture of butyllithium and potassium t-butoxide and bimetallated at both the alpha and the ortho positions by two equivalents of the same reagent.