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.
制备取代的
吡唑吡咯啉通常使用N-甲基-N-(3-3-[2-
噻吩基羰基]-
吡唑-[1,5-α]-
吡咯啉-7-基}苯基)乙酰胺等化合物,这些化合物在多种症状的治疗中具有广泛的用途,包括治疗失眠。在本发明的实践中,披露了不需要使用和/或分离
吡唑中间体的改进技术,以及制备反应中间体本身的改进技术。这些技术具有显著的优势,包括增强效率,特别是在大规模制造的情况下。