Abstract The NMR variable temperature behaviour of a series of N-aryl-N-benzyl alkyl carbamates was investigated. The barrier to rotation about the N-aryl bond was determined for all the compounds studied. The values obtained, which are in good agreement with those found for structurally related N-aryl-N-benzylamides, are in the range ΔG≠= 60.7-89.6 kJ mol− 1. For some carbamates another conformational phenomenon has been observed, ...