- Rilpivirine midbody preparing technology
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The invention belongs to the field of medicinal chemistry, and particularly relates to a rilpivirine midbody preparing technology. The technology comprises the steps that 1, 4-bromo-2,6-dimethylaniline and acrylonitrile react under the catalysis of pallad
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Paragraph 0017; 0018; 0019; 0020
(2016/11/28)
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- Pharmaceutical compositions comprising a basic drug compound, a surfactant, and a physiologically tolerable water soluble acid
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The invention provides a novel pharmaceutical composition comprising a basic respectively acidic drug compound, a surfactant and a physiologically tolerable water-soluble acid respectively base characterized in that the acid respectively base:drug compound ratio is at least 1:1 by weight.
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- PROCESS FOR RILPIVIRINE
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The present invention provides a novel process for the preparation of 4-(4-hydroxypyrimidin-2-ylamino)benzonitrile. The present invention also provides a novel process for the preparation of 4-iodo-2,6-dimethyl benzenamine. The present invention further provides an improved process for the preparation of rilpivirine. The present invention further provides a tosylate salt of rilpivirine, process for its preparation and pharmaceutical compositions comprising it.
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Paragraph 0086-0087
(2014/08/19)
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- RILPIVIRINE PROCESS
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Disclosed is process for the preparation of a key Rilpivirine intermediate namely, (E)-4-(2-cyanoethenyl)-2,6-dimethylphenylamine hydrochloride (II) by a process comprising reaction of the tetrafluoroborate salt of the diazonium ion of 2,6-dimethyl-4-amin
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- RILPIVIRINE HYDROCHLORIDE
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The present invention provides a novel process for the preparation of rilpivirine. The present invention also provides a novel process for the preparation of rilpivirine hydrochloride. The present invention further provides a rilpivirine hydrochloride monohydrate, process for its preparation and pharmaceutical compositions comprising it.
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- RILPIVIRINE HYDROCHLORIDE
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As used herein the term "room temperature" refers to a temperature of about 25°C to about 35°C. According to one aspect of the present invention, there IS provided a novel process for the preparation of rilpivirine, which comprises: a) condensing the (E)-3-( 4-amino-3,5-dimethylphenyl)acrylonitrile hydrochloride with 4-( 4-chloropyrimidin-2-ylamino )benzonitrile m the presence of Nmethylpyrrolidone; b) heating the contents obtained in step (a) at about 75 to 95°C to obtain a solution; c) cooling the solution obtained in step (b) at below 35°C; d) adding water to the reaction mass; and e) isolating rilpivirine. The reaction in step (b) may preferably be heated to 100 to 110°C. Step (c) may preferably be carried out at room temperature. Rilpivirine may be isolated in step (e) by the methods known such as Filtration or centrifugation.
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Page/Page column 9; 10
(2013/03/28)
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- PROCESS FOR RILPIVIRINE
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The present invention provides a novel process for the preparation of 4-(4-hydroxypyrimidin-2-ylamino)benzonitrile. The present invention also provides a novel process for the preparation of 4-iodo-2,6-dimethyl benzenamine. The present invention further provides an improved process for the preparation of rilpivirine. The present invention further provides a tosylate salt of rilpivirine, process for its preparation and pharmaceutical compositions comprising it.
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- Ligandless Heck coupling between a halogenated aniline and acrylonitrile catalyzed by Pd/C: Development and optimization of an industrial-scale Heck process for the production of a pharmaceutical intermediate
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The aniline derivative 3 is a key building block of rilpivirine (TMC278) 2, a new potent NNRTI compound under clinical evaluation. In this paper we describe the development of a new synthesis of 3 based on a Heck coupling between a halogenated aniline and acrylonitrile using low loading of Pd/C (0.5 mol %) as catalyst. This resulted in a process which has been successfully transferred into production on 2400 mol-scale (6000 L reactor)
- Schils, Didier,Stappers, Fred,Solberghe, Geoffrey,Van Heck, Richard,Coppens, Michelle,Van Den Heuvel, Dirk,Van Der Donck, Peter,Callewaert, Tom,Meeussen, Frank,De Bie, Erika,Eersels, Kristof,Schouteden, Ellen
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p. 530 - 536
(2013/01/03)
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- PROCESSES FOR THE PREPARATION OF 4-[[4-[[4-(2-CYANOETHENYL)-2,6-DIMETHYLPHENYL]AMINO]-2-PYRIMIDINYL]AMINO]BENZONITRILE
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Processes for the preparation of 4-[[4-[[4-(2-cyanoethenyl)-2,6-dimethylphenyl]amino]-2-pyrimidinyl]amino]benzonitrile of formula (I), a N-oxide, a pharmaceutically acceptable acid addition salt, a quaternary amine or a stereochemically isomeric form thereof are provided, said processes comprise a) reacting 4-(2-cyanoethenyl)-2,6-dimethylbenzenamine with an intermediate of formula (III) in the presence of a suitable solvent; b) reacting an intermediate of formula (IV) with acrylonitrile in the presence of a suitable palladium catalyst, a suitable base and a suitable solvent; c) dehydrating the corresponding amide of the compound of formula (I).
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