Acid and base catalyzed Davis–Beirut reaction: experimental and theoretical mechanistic studies and synthesis of novel 3-amino-2H-indazoles
作者:Belem Avila、Mohammad H. El-Dakdouki、Musa Z. Nazer、Jason G. Harrison、Dean J. Tantillo、Makhluf J. Haddadin、Mark J. Kurth
DOI:10.1016/j.tetlet.2012.09.026
日期:2012.11
2H-indazoles and, subsequently, indazolones, is shown to proceed rapidly from o-nitrosobenzaldehyde and primary amines under both acid and base catalysis. Experimental and theoretical evidence in support of a reaction mechanism is provided in which o-nitrosobenzylidine imine is a pivotal intermediate in this N,N-bond forming heterocyclization reaction. The Davis–Beirut reaction is also shown to effectively
戴维斯-贝鲁特反应提供了 2 H-吲唑和随后的吲唑酮的有效合成,显示在酸和碱催化下从邻亚硝基苯甲醛和伯胺快速进行。提供了支持反应机理的实验和理论证据,其中邻亚硝基苯亚甲基亚胺是该N , N键形成杂环化反应的关键中间体。戴维斯-贝鲁特反应也被证明可以有效地合成许多新型 3-氨基-2 H-吲唑衍生物。