The metallation reactions of (trifluoromethyl)(alkylthio) benzenes with organolithium reagents and with the butyllithium/potassium tert-butoxide superbasic mixture are here described. The results, according to the theoretical calculations of energy minima, show the monometallation regiochemistry is directed by the sulphur atom. On the other side, the bimetallation, that can be performed only on methylthio derivatives, depends on the ...
