Benzimidazole Annulated New Heterocyclic Compounds: Synthesis of New Polycyclic Pyrazole Derivatives
作者:Mohamed Ali A. Khalil
DOI:10.1002/jhet.867
日期:2012.7
polycyclic compounds of potential pharmaceutical interest have been prepared starting from 2‐benzimidazolelyl (1,3‐dioxo‐2‐indenylidene) acetonitrile. Unhypothesized, the C≡N function of the plausible intermediates was released as HCN rather than a classical nucleophilic addition when treated with bidentate reagents such as hydrazines, 5‐amino‐1H‐1,2,4‐triazole, 5‐amino‐4‐cyano‐1H‐pyrazole and 2‐aminobenzimidazole
从2-苯并咪唑基(1,3-二氧代-2--2-茚基)乙腈开始制备了几(3)种具有潜在药物价值的新的基于苯并咪唑的多环化合物。未经假设,当用肼,5-氨基-1 H -1、1,2-4-三唑,5-氨基-4等双齿试剂处理时,可能的中间体的C≡N功能以HCN的形式释放,而不是经典的亲核加成。氰基1 H吡唑和2氨基苯并咪唑 当化合物3与活性乙腈衍生物反应时,除新的嘧啶,吡嗪和a庚因衍生物外,它还通过消除HCN而提供了新的多官能吡啶。