N-Ethyl-N-phenyl-N'-tosyl-formamidine.

The title compound, C(16)H(18)N(2)O(2)S, was obtained as an unexpected product while attempting to form carbon-nitro-gen bonds by catalytic amidation. The mol-ecule displays an E conformation about the C=N double bond. The planes of the two aromatic rings in the mol-ecule form a dihedral angle of 47.06 (9)°.