Reaction of 1,3-diphenylpropanetrione with dimethylphosphorous acid

1. 1,3-Diphenylpropane-1,2,3-trione reacts with dimethyl phosphite to give dimethyl dibenzoylmethyl phosphate, the structure of which has been confirmed by x-ray diffraction studies. In the presence of triethylamine, this reaction leads to the formation of dimethyl 1-benzoyl-2-phenylvinyl phosphate. © 1987 Plenum Publishing Corporation