Nucleophilic attack on thiocyanates can occur either on the sulfur atom or on the cyanide gr0up. l An old report shows that the condensation of an arylmagnesium halide with an alkyl thiocyanate yields chiefly a nitrile or a ketones2 The behavior of perfluoroalkylmagnesium bromides is not always similar to that of usual Grignard reagent^.^ Our initial goal was to examine the reaction of alkyl or aryl thiocyanates with the Grignard reagent CF3 (CF2) ...
