Synthesis of Pyrido[2,3-<i>e</i>]pyrrolo[1,2-<i>a</i>]pyrazine Derivatives via Tandem Iminium Cyclization and Smiles Rearrangement
作者:Jinbao Xiang、Hongxiang Xie、Dongsheng Wen、Qun Dang、Xu Bai
DOI:10.1021/jo702754r
日期:2008.4.1
primary amine generated a novel pyrido[2,3-e]pyrrolo[1,2-a]pyrazine scaffold. TFA was discovered to be an efficient catalyst in the reactions with aromatic amines, whereas TiCl4 was found to be superior in the case of aliphatic amines. This methodology proved to be efficient in the preparation of a library of diversified pyrido[2,3-e]pyrrolo[1,2-a]pyrazine derivatives.
吡啶环氧基乙醛1和伯胺的串联亚胺环化和Smiles重排生成了新型吡啶并[2,3- e ] pyrrolo [1,2- a ] pyrazine支架。发现TFA是与芳族胺反应的有效催化剂,而在脂肪族胺的情况下,发现TiCl 4更好。事实证明,该方法在制备多样化的吡啶并[2,3- e ]吡咯并[1,2- a ]吡嗪衍生物库中是有效的。