[EN] PROCESS FOR THE PREPARATION OF N-[5-(3-DIMETHYLAMINO-ACRYLOYL)-2-FLUORO-PHENYL]-N-METHYL-ACETAMIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE N-[5-(3-DIMÉTHYLAMINO-ACRYLOYL)-2-FLUORO-PHÉNYL]-N-MÉTHYL-ACÉTAMIDE
申请人:INTERQUIM SA
公开号:WO2010081788A1
公开(公告)日:2010-07-22
The present invention relates to a new process for the preparation of N-[5-(3-dimethylamino-acryloyl)-2-fluoro-phenyl]-N-methyl-acetamide (I) in a high yield and high purity, which is an intermediate in the synthesis of compounds with affinity for GABAA receptor. In this process, N-(5-acetyl-2- fluorophenyl)-N-methyl-acetamide (VI) is reacted with an excess of N,N-dimethylformamide dimethyl acetal (NNDMF-DMA). The present invention also provides a new process for the preparation of a compound with affinity for GABAA receptor, N-2-fluoro-5-[3-(thiophene)-2-carbonyl-pyrazolo[1,5- a]pyrimidin-7-yl]phenyl}-N-methyl-acetamide (II), which comprises the following steps: a) methylation of N-(5-acetyl-2-fluorophenyl)-N-acetamide (IV) with a methyl sulfonate, b) reaction of the resulting compound (VI) with NNDMF-DMA, and c) reaction of the resulting compound (I) with (5-amino-1H- pirazol-4-yl)thiophen-2-yl-methanone (III) in glacial acetic acid. The present invention also relates to new intermediate (VI).
PROCESS FOR THE PREPARATION OF N-[5-(3-DIMETHYLAMINO-ACRYLOYL)-2-FLUORO-PHENYL]-N-METHYL-ACETAMIDE
申请人:Sallares Rosell Juan
公开号:US20110275809A1
公开(公告)日:2011-11-10
The present invention relates to a new process for the preparation of N-[5-(3-dimethylamino-acryloyl)-2-fluorophenyl]-N-methyl-acetamide (I) in a high yield and high purity, which is an intermediate in the synthesis of compounds with affinity for GABA
A
receptor. In this process, N-(5-acetyl-2-fluorophenyl)-N-methyl-acetamide (VI) is reacted with an excess of N,N-dimethylformamide dimethyl acetal (NNDMF-DMA). The present invention also provides a new process for the preparation of a compound with affinity for GABA
A
receptor, N-2-fluoro-5-[3-(thiophene)-2-carbonyl-pyrazolo[1,5-a]pyrimidin-7-yl]phenyl}-N-methyl-acetamide (II), which comprises the following steps: a) methylation of N-(5-acetyl-2-fluorophenyl)-N-acetamide (IV) with a methyl sulfonate, b) reaction of the resulting compound (VI) with NNDMF-DMA, and c) reaction of the resulting compound (I) with (5-amino-1H-pirazol-4-yl)thiophen-2-yl-methanone (III) in glacial acetic acid. The present invention also relates to new intermediate (VI).
Pyrazolo[1,5-a]pyrimidines, processes, uses and compositions
申请人:FERRER INTERNACIONAL, S.A.
公开号:EP1884516A1
公开(公告)日:2008-02-06
The invention provides novel pyrazolo[1,5-a]pyrimidines which are useful for treating or preventing anxiety, epilepsy and sleep disorders including insomnia, and for inducing sedation-hypnosis, anesthesia, sleep and muscle relaxation.
PYRAZOLO[1,5-A]PYRIMIDINES, PROCESSES, USES AND COMPOSITIONS
申请人:Anglada Luis
公开号:US20090264448A1
公开(公告)日:2009-10-22
The invention provides novel pyrazolo[1,5-a]pyrimidines which are useful for treating or preventing anxiety, epilepsy and sleep disorders including insomnia, and for inducing sedation-hypnosis, anesthesia, sleep and muscle relaxation.
PROCESS FOR THE MANUFACTURE OF A CRYSTALLINE PYRAZOLO[1,5-A]PYRIMIDINE COMPOUND
申请人:Anglada Luis
公开号:US20100048896A1
公开(公告)日:2010-02-25
The present invention relates to a novel process for the industrial manufacture of polymorph B of N-2-Fluoro-5-[3-(thiophene-2-carbonyl)-pyrazolo[1,5-a]pyrimidin-7-yl]-phenyl}-N-methyl-acetamide.