PROCESS FOR THE PREPARTION OF OLANZAPINE
The invention relates to a process for the preparation of 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno-[2,3-b][1,5]benzodiazepine (olanzapine) of the formula (I) by reacting 4-amino-2-methyl-10H-thieno [2,3-b][1/5]benzodiazepine hydrochloride of the formula (II) with N-methylpiperazine in an organ...
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Main Authors | , , , , , , |
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Format | Patent |
Language | English |
Published |
28.05.2009
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a process for the preparation of 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno-[2,3-b][1,5]benzodiazepine (olanzapine) of the formula (I) by reacting 4-amino-2-methyl-10H-thieno [2,3-b][1/5]benzodiazepine hydrochloride of the formula (II) with N-methylpiperazine in an organic solvent, which comprises carrying out the reaction in the mixture of toluene and 1,3-dimethyl-2-imidazolidinone. The invention also encompasses new 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno [2,3-b][1,5]benzodiazepine dihydrochloride trihydrate of the formula (IB), the preparation thereof and pharmaceutical compositions comprising said new compound. |
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Bibliography: | Application Number: US20060093344 |