Phosphonoformaldehyde, a process for its preparation and its...

C - Chemistry – Metallurgy – 07 – F

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260/501.5

C07F 9/38 (2006.01)

Patent

CA 1187895

- 10 - ABSTRACT OF THE DISCLOSURE The invention relates to phosphonoformaldehyde of the formula Image Also included in the invention is a method for the manufacture of said phosphonoformaldehyde in which a dialkoxymethane phosphonic acid is warmed with water (then reacted with a base if a salt is desired.) Phosphonoformaldehyde is an intermediate for the manufacture of phosphonohydroxy acetic acid, which is an antiviral agent.

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