M. Hachemi et al., DRY REACTION OF DIETHYL CYANOMETHYLPHOSPHONATE AND TETRAETHYL METHYLENEDIPHOSPHONATE WITH BENZALDEHYDE ON SOLID BASES, Phosphorus, sulfur and silicon and the related elements, 113(1-4), 1996, pp. 131-136
Competitive Horner and Knoevenagel reactions of benzaldehyde with diet
hyl cyanomethylphosphonate and tetraethyl methylenediphosphonate succe
ssively on different solid bases (oxide, fluoride and mixtures) withou
t the use of solvent were investigated. Tetraethyl methylenediphosphon
ate with benzaldehyde with similar conditions gave only the product of
Horner's reaction. Basicity of the solid and nature of the cation (mo
no or divalent) of the base seemed important to explain the ratio of p
roducts formed in the Horner/Knoevenagel reactions.