C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/38 (2006.01)
Patent
CA 2445428
This invention is related with the preparation of 4-amino-1-hydroxybutylidene- 1, 1-biphosphonic acid or salts thereof. The reaction of 4-aminobutyric acid with phosphorous acid and phosphorus trichloride in the presence of aralkyl or alkyl ethoxylates or triglycerides or plant or animal oils or their derivatives; and recovering of 4-amino-1- hydroxybutylidene-1,1-biphosphonic acid or salts thereof are described. The main feature of the invention is in the use of the above-defined non-ionic emulsifying agents in the phosphonylation reaction.
Cette invention concerne la préparation d'acide 4-amino-1-hydroxybutylidène-1,1-biphosphonique ou de ses sels. Selon cette invention, on fait réagir de l'acide 4-aminobutyrique avec de l'acide phosphoreux et du trichlorure de phosphore en présence d'éthoxylates d'aralkyl ou d'alkyl ou de triglycérides, tels que des huiles végétales ou animales ou leur dérivé, et on extrait ensuite l'acide 4-amino-1-hydroxybutylidène-1,1-biphosphonique ou des sels de ce dernier. La caractéristique principale de cette invention repose sur l'utilisation des émulgateurs non ioniques définis ci-dessus dans la réaction de phosphonylation.
Aslan Tuncer
Dabak Kadir
Ozarslan A. Evren
Sahbaz Filiz
Eos Eczacibasi Ozgun Kimyasal Urunler Sanayi Ve Ticaret A.s.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Zentiva Kimyasal Urunler Sanayi Ve Ticaret Anonim Sirketi
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