Heterocyclic o-Aminonitriles: Preparation of Pyrazolo[3,4-d]-pyrimidines with Modification of the Substituents at the 1- Position
作者:Eljazi Al-Afaleq、Samar Abubshait
DOI:10.3390/60700621
日期:——
pyridazin-3-yl]pyrazole-o-aminonitriles (3a-c) were formed using 3-hydrazino-6-(p-tolyl)pyridazine (2) and ketene S,S-acetals (1a), S,N-acetals (1b) or tetracyanoethylene (1c). The pyrazole-o-aminonitriles (3a-c) were in turn used as precursors for the preparation of previously unreported 1-[6-(p-tolyl)-pyridazin-3-yl]pyrazolo[3,4-d]pyrimidines (8, 9, 13-20) and 7-[6-( p-tolyl) pyridazin-3-yl]2-arylpyrazolo[3
使用 3-hydrazino-6-(p-tolyl)pyridazine (2) 和乙烯酮 S,S 形成新型 1-[6-(p-tolyl) pyridazin-3-yl]pyrazole-o-aminonitriles (3a-c) -缩醛 (1a)、S,N-缩醛 (1b) 或四氰基乙烯 (1c)。吡唑-o-氨基腈(3a-c)又被用作制备以前未报道的1-[6-(对甲苯基)-哒嗪-3-基]吡唑并[3,4-d]嘧啶的前体( 8, 9, 13-20)和7-[6-(对甲苯基)哒嗪-3-基]2-芳基吡唑并[3,4-d]1,2,4-三唑并[5,1-f]嘧啶(10-12) 预计具有相当大的化学和药理活性。