Abstract The thermal reactions of fluoroalkanesulfonyl azides R f CF 2 SO 2 N 3 1 with nitrobenzene and its derivatives XC 6 H 4 NO 2 (X= H, F, Cl, CF 3) gave the unexpected N- fluoroalkaneacyl anilides R f CONHC 6 H 4 X (X= H, Cl, F, CF 3) in addition to fluoroalkanesulfonyl amides R f CF 2 SO 2 NH 2. Under the same reaction conditions, however, nitrobenzene containing an electron-donating group RC 6 H 4 NO 2 (R= CH 3, ...