[EN] PROCESS FOR THE PREPARATION OF A PYRAZOLE DERIVATIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN DÉRIVÉ DE PYRAZOLE
申请人:INDOCO REMEDIES LTD
公开号:WO2011064798A1
公开(公告)日:2011-06-03
Disclosed here is a process for the preparation of 3 - amino pyrazole derivative of Formula (I) where R1 = H, C1 - C4 alkyl group or benzyl group or phenyl group; R2 = C1 - C6 alkyl group or benzyl group; comprising a step of reacting the compound of Formula (Ill) with hydrazine hydrate.
[EN] SYNTHESIS OF SUBSTITUTED PYRAZOLOPYRIMIDINES<br/>[FR] SYNTHESE DE PYRAZOLOPYRIMIDINES SUBSTITUEES
申请人:NEUROCRINE BIOSCIENCES INC
公开号:WO2001010868A1
公开(公告)日:2001-02-15
Methods of making substituted pyrazolopyrimidines generally and, more particularly, N-methyl-N-(3-3-[2-thienylcarbonyl]-pyrazol-[1,5-α]-pyrimidin-7-yl}phenyl)acetamide. Such compounds have utility over a wide range of indications, including treatment of insomnia. In the practice of the present invention, improved techniques which do not require use and/or isolation of the pyrazole intermediate are disclosed, as well as improved techniques for making the reaction intermediates themselves. Such techniques offer significant advantages, including enhanced efficiency, particularly in the context of large scale manufacture.
Methods of making substituted pyrazolopyrimidines generally and, more particularly, N-methyl-N-(3-{3-[2-thienylcarbonyl]-pyrazol-[1,5-&agr;]pyrimidin-7-yl}phenyl)acetamide. Such compounds have utility over a wide range of indications, including treatment of insomnia. In the practice of the present invention, improved techniques which do not require use and/or isolation of the pyrazole intermediate are disclosed, as well as improved techniques for making the reaction intermediates themselves. Such techniques offer significant advantages, including enhanced efficiency, particularly in the context of large scale manufacture.