C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 237/22 (2006.01)
Patent
CA 2326506
The present invention relates to a 3/2-hydrochloride of 4-chloro-5-[3- (4- benzylpiperazin-1- yl)carbonylmethoxy-4- methoxybenzylamino]- 3(2H)- pyridazinone, and also relates to a method for producing the 3/2- hydrochloride of 4-chloro-5-[3- (4-benzylpiperazin-1- yl)carbonylmethoxy-4- methoxybenzylamino]- 3(2H)-pyridazinone which comprises crystallizing in an alcohol type solvent or an alcohol type-ester type mixture solvent in the presence of hydrogen chloride and water.
Cette invention concerne un 3/2-hydrochlorure de 4-chloro-5-[3-(4-benzylpipérazin-1-yl)carbonylméthoxy-4-méthoxybenzylamino]-3(2H)-pyridazinone, ainsi qu'un procédé de production de ce 3/2-hydrochlorure de 4-chloro-5-[3-(4-benzylpipérazin-1-yl)carbonylméthoxy-4-méthoxybenzylamino]-3(2H)-pyridazinone. Ce procédé consiste à effectuer une cristallisation dans un solvant de type alcool ou dans un mélange de solvants de type alcool et de type ester, ceci en présence de chlorure d'hydrogène et d'eau.
Horiuchi Takashi
Kamikawaji Minako
Matsumoto Hiroo
Matsumoto Sachiko
Nissan Chemical Industries Ltd.
Smart & Biggar
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