Diisopropyl [(benzoyl-amino)-(phen-yl)meth-yl]phospho-nate.

The title compound, C(20)H(26)NO(4)P, has been obtained by the reaction of benzoyl chloride and diisoprop-yl[amino-(phen-yl)meth-yl]phospho-nate. The dihedral angle between the planes of the benzoyl-amino group and the phenyl ring is 77.0 (2)°. The crystal structure is stabilized by strong inter-molecular N-H⋯O hydrogen bonds between the doubly bonded phosphoryl O atom and the amide N atom which link the mol-ecules into pairs about a center of symmetry.