An Efficient and Facile Synthesis of Functionalized Indole-3-yl Pyrazole Derivatives Starting from 3-Cyanoacetylindole
作者:Ahmed El-Mekabaty、Ahmed Mesbah、Ahmed A. Fadda
DOI:10.1002/jhet.2654
日期:2017.3
intermediate for the synthesis of novel pyrazolo[1,5‐a]pyrimidines via its reactions with appropriate 1,3‐biselectrophilic reagents or through three‐component condensations with triethyl orthoformate and compounds possessing an activated methylene group. Besides, the applicability and synthetic potency of (4) to attain polyfunctionally substituted imidazo[1,2‐b]pyrazole, pyrazolo[1,5‐a][1,3]diazepine and pyrazolo[1
迄今为止报道的多用途3-(1H-吲哚-3-基)-1H-吡唑-5-胺(4)是通过3-氰基乙酰吲哚(3)与水合肼在回流的乙醇中反应合成的,并用作关键中间体通过与适当的1,3-双亲电子试剂反应或与原甲酸三乙酯和具有活化亚甲基的化合物进行三组分缩合反应合成新型吡唑并[1,5- a ]嘧啶。此外,(4)的用途和合成效能可得到多官能取代的咪唑并[1,2- b ]吡唑,吡唑并[1,5- a ] [1,3]二氮杂和吡唑并[1,5- c已经研究了具有预期药物意义的] [1,3,5]噻二嗪衍生物。讨论了新合成化合物形成的机理。