Me 5 the aqueous acid the fission of the PN bond is very fast, the reaction was studied in media of much lower solvolyzing power. One reaction system was the solution of the equimolar proportions of a substrate and trichloroacetic acid (TCAA) in chloroform; the other involved solvolysis in the rigorously anhydrous trifluoromethanesulfonic acid (TFMSA). In the first case solvolysis was expected to be slow because of the low concentration of ...