Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... In a one pot procedure, treatment of chloro or methyl substituted acetanilides in HF/SbF 5 /CCl 4 followed by addition of HF/pyridine yields trifluoromethyl derivatives with high regioselectivity. ... Trifluoromethylated aromatics are of major importance and have found a large number of uses as ...