efficient Fe/Cu relay-catalyzed domino protocol has been developed for the synthesis of 2-phenylquinazolin-4-amines from commercially available ortho-halogenated benzonitriles, aldehydes, and sodium azide. This elegant domino process involved consecutive iron-mediated [3 + 2] cycloaddition, copper-catalyzed SNAr, reduction, cyclization, oxidation, and copper-catalyzeddenitrogenation sequences. The formed structure
已经开发了一种高效的Fe / Cu中继催化多米诺协议,用于从可商购的邻卤代苄腈,醛和叠氮化钠合成2-苯基喹唑啉-4-胺。这种优美的多米诺骨牌工艺涉及连续的铁介导的[3 + 2]环加成,铜催化的S N Ar,还原,环化,氧化和铜催化的脱氮序列。形成的结构是药物和生物活性分子中的特权核心。
An efficient method to prepare 4-aminoquinazolines: Potential application to conformation-restricted bleomycin analogs
作者:Zhonglin Wei、Lianyou Zheng、Qun Dang、Xu Bai
DOI:10.1002/jhet.238
日期:2009.11
4‐aminoquinazolines were designed as conformation‐restricted bleomycinanalogs. An efficientmethod was developed to prepare the 4‐aminoquinazoline heterocyclic nucleus, which entails a two‐step one‐pot procedure leading to 4‐aminoquinazolines in good yields. The application of this method to synthesis 4‐aminoquinazoline bleomycinanalogs is envisioned. J. Heterocyclic Chem., (2009).
Efficient synthesis of 2-arylquinazolin-4-amines <i>via</i> a copper-catalyzed diazidation and ring expansion cascade of 2-arylindoles
作者:Meng-Meng Xu、Wen-Bin Cao、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1039/c8cc07721e
日期:——
Copper-catalyzedsynthesis of 2-arylquinazolin-4-amines from readily available 2-arylindoles and TMSN3 has been developed. The mechanism study shows that the domino reaction may involve a free radical diazidation, denitrogenation, intramolecular cyclization and ring expansion sequence.