A CHIRAL BICYCLIC 1-ACETOXY PHOSPHONAMIDE

The crystal structure of a chiral non-racemic 1-acetoxy phosphonamide, ,4,5,6,7,7a-octahydro-1H-1,3,2-benzodiazaphosphole 2-oxide, m.p. = 38 5.5-386 K, C23H45N2O3P, has been determined by X-ray diffraction. The title compound consists of a five-membered ring with a tetrahedrally c oordinated P atom. In addition to the two N atoms of the five-membered ring, the P atom is bonded to an O atom and the C-1 atom of the aceto xylalkyl chain. The five-membered ring is trans fused to a cyclohexane ring in a chair conformation.