通过 Fe(0) 粉末介导的一锅还原环化方案,揭示了双杂环5,6-二氢-喹唑啉代[4,3- b ]喹唑啉-8-酮的简短、高效和区域选择性合成。机理研究证明,水作为硝基还原的氢源,醛加速了反应速率。设计的转化在有氧条件下进行,提供了一系列仿生分子支架。此外,光物理研究表明蓝色荧光发射具有良好的荧光量子产率。
Synthesis of 6-aryl-5H-quinazolino[4,3-b]quinazolin-8(6H)-one derivatives in ionic liquids catalyzed by iodine
作者:Yong-Gang Ma、Yan Zhang、Bin-Bin Feng、Xiang-Shan Wang
DOI:10.1007/s11164-015-2072-8
日期:2016.2
Abstract The iodine-catalyzed reaction of 2-(2-aminophenyl)quinazolin-4(3 H )-ones and benzaldehydes was treated in ionicliquids, giving a series of 6-aryl-5 H -quinazolino[4,3- b ]quinazolin-8(6 H )-onederivatives in high yields. This novel procedure has the advantages of high yields, being metal-free and having a mild reaction condition. Graphical Abstract
摘要在离子液体中处理 了2-(2-氨基苯基)喹唑啉-4(3 H )-酮与苯甲醛的碘催化反应 ,得到了一系列6-芳基-5 H- 喹唑啉代[4,3- b ]。高产率的喹唑啉-8(6 H )-one衍生物。这种新颖的方法具有高收率,无金属且反应条件温和的优点。 图形概要
A microwave-assisted copper-mediated tandem approach for fused quinazoline derivatives
作者:Satyaveni Malasala、Anusha Polomoni、Sai Manohar Chelli、Swayamsidda Kar、Y. V. Madhavi、Srinivas Nanduri
DOI:10.1039/d0ob02312d
日期:——
A method for the microwave-assisted copper-mediated oxidativecoupling reaction of different aldehydes and quinazolines/benzimidazoles has been developed for the synthesis of fused-polycyclic systems via new C–N bond formation. The current methodology involves the use of environmentally benign NH4OAc as the amine source in the presence of 2-propanol as the solvent. This novel tandem reaction approach