C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 241/44 (2006.01)
Patent
CA 2286797
The present invention provides a process for the production of highly pure 6,7-dichloro-5-nitro-2,3-dihydroquinoxaline-2,3-dione, wherein the crude 6,7-dichloro-5-nitro-2,3-dihydroquinoxaline-2,3-dione is recrystallized from solution of highly polar solvents and water.
La présente invention concerne un procédé de préparation de 6,7-dichloro-5-nitro-2,3-dihydroquinoxaline-2,3-dione de haute pureté, qui consiste à recristalliser l2 6,7-dichloro-5-nitro-2,3-dihydroquinoxaline-2,3-dione brut à partir d'une solution d'eau et de solvants fortement polaires.
Abbott Laboratories
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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