Jm. Benech et al., NEW METHOD FOR SYNTHESIS OF SYMMETRICAL H YDROXY-BISPHOSPHONIC ESTERS, Phosphorus, sulfur and silicon and the related elements, 113(1-4), 1996, pp. 295-298
A one pot synthesis Of symmetric methyl, benzyl hydroxy bisphosphonic
esters can be obtained, without the use of a dialkylphosphite by intro
ducing a protic reagent which removes the usual alpha-ketophosphonate
step.