C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/38 (2006.01)
Patent
CA 2053270
The present invention relates to a method for the synthesis of foscarnet, i.e. trisodium phosphonoformate hexahydrate, comprising the steps of adding sodium hydroxide to water, heating the aqueous sodium hydroxide solution to 50 °C, adding trie- thyl phosphonoformate to said solution at 50 °C, heating the reaction mixture to reflux for about 1 hour, cooling of the reaction mixture and filtering-off of the product.
Jakupovic Edib
Stenhede Urban
Aktiebolaget Astra
Fetherstonhaugh & Co.
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