Synthesis of tetraalkyl vinyldene diphosphonate monomer

Details Synthesis of tetraalkyl vinyldene diphosphonate monomer Synthesis of tetraalkyl vinyldene diphosphonate monomer

C - Chemistry, Metallurgy

07

F

C07F 9/40 (2006.01)

Patent

CA 2110620

Abstract of the Disclosure Synthesis of Tetraalkyl Vinylidene Diphosphonate Monomer A method of making a monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The monomer is manufactured by combining an aqueous secondary amine solution with a formaldehyde and a tetra (alkyl) methylene diphosphonate. The resulting mixture is maintained at a pH above about 6 and refluxed for two hours to enable reaction to produce the monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The product monomer is then purified to produce the final end product.

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