[EN] PROCESSES FOR THE PREPARATION OF 4-[[4-[[4-(2-CYANOETHENYL)-2,6-DIMETHYLPHENYL]AMINO]-2-PYRIMIDINYL]AMINO]BENZONITRILE<br/>[FR] PROCEDES DE PREPARATION DE 4-[[4-[[4-(2-CYANOETHENYL)-2,6-DIMETHYLPHENYL]AMINO]-2-PYRIMIDINYL]AMINO]BENZONITRILE
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2004016581A1
公开(公告)日:2004-02-26
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).
[EN] MODIFIED HECK REACTION<br/>[FR] REACTION DE HECK MODIFIEE
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2005123662A1
公开(公告)日:2005-12-29
The present invention includes a method for the preparation of a cinnamonitrile by addition of an aryl to acrylonitrile in the presence of a heterogeneous palladium catalyst, a phosphine, a base and a salt. The reaction can be conducted not only on aryl compounds activated with electron withdrawing groups, but also on neutral and even on deactivated aryl compounds.
An optimized procedure is given for the synthesis of novel 3-(arylamino)-1,2,4-triazin-5-one building blocks from commercially available material. By employing these building blocks, a practical protocol is described for the functionalization of the 5-position of the triazine core with anilines orphenols.
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
作者:Didier Schils、Fred Stappers、Geoffrey Solberghe、Richard van Heck、Michelle Coppens、Dirk Van den Heuvel、Peter Van der Donck、Tom Callewaert、Frank Meeussen、Erika De Bie、Kristof Eersels、Ellen Schouteden
DOI:10.1021/op8000383
日期:2008.5.1
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)