A Greener Approach for the Large-Scale Synthesis of 1,4,5-Trisubstituted Pyrazole, AZD8329
作者:Paramashivappa Rangappa、Avipsa Ghosh、Smitha Chitrapadi、Gajanan Kantikar、Vinod Kumar CH、Sureshkumar Sythana、Sulur G Manjunath、Sudhir Nambiar、Sridhran R
DOI:10.1021/op5001463
日期:2014.8.15
The development of a convenient, safe and scalable process for AZD8329 manufacturing is reported here. Synthesis was achieved in a two-step telescopic process with an excellent overall yield of 75%. In the first step enamine (6) was synthesized with 90% yield through three chemical transformations. In the next step AZD8329 was synthesized from the reactions of 6 and 4-hydrazinobenzoic acid hydrochloride
此处报道了为AZD8329制造开发一种方便,安全和可扩展的过程的过程。合成是通过两步伸缩过程完成的,总产率高达75%。在第一步中,通过三个化学转化以90%的产率合成了烯胺(6)。在下一步中,AZD8329由6和4-肼基苯甲酸盐酸盐7的反应通过两次化学转化合成。该过程非常有效且经济,并且采用AZD8329是用公斤级制的。通过在制造过程中使用最少数量的溶剂和能源以及过程质量强度(PMI)<60,证明了一种更环保的方法。