Copper‐Catalyzed Three‐Component Cascade Reaction of Benzaldehyde with Benzylamine and Hydroxylamine or Aniline: Synthesis of 1,2,4‐Oxadiazoles and Quinazolines
作者:Chao Wang、Xiyan Rui、Dongjuan Si、Rupeng Dai、Yueyue Zhu、Hongmei Wen、Wei Li、Jian Liu
DOI:10.1002/adsc.202001535
日期:2021.6.8
The analogous three-component synthesis strategy for substituted 1,2,4-oxadiazole and quinazoline derivatives from readily available benzaldehyde, benzylamine and hydroxylamine or aniline has been developed. Both the cascade reaction sequences involves nucleophilic addition of C−N bond, introduction a halogen donor, nucleophilic substitution and Cu(II)-catalyzed aerobic oxidation. This synthesis methodology
已经开发了从容易获得的苯甲醛、苄胺和羟胺或苯胺中取代 1,2,4-恶二唑和喹唑啉衍生物的类似三组分合成策略。两个级联反应序列都涉及 CN 键的亲核加成、引入卤素供体、亲核取代和 Cu(II) 催化的有氧氧化。这种合成方法表现出良好的收率、广泛的底物范围和作为绿色氧化剂的氧气。因此,该合成方案为从容易和简单的起始材料构建取代的 1,2,4-恶二唑和喹唑啉提供了策略。