formation or C–C bond formation upon homocondensation or reaction with simple olefins, respectively. Cyclization followed by a final oxidation generates these classes of interesting bioactive heterocycles in one synthetic transformation. Additionally, the one-pot multicomponent synthesis of quinolines from anilines, aldehydes, and olefins has also been successfully developed under these mild oxidative conditions
Molecular iodine-catalyzed and air-mediated tandem synthesis of quinolines via three-component reaction of amines, aldehydes, and alkynes
作者:Xuejian Li、Zhenjun Mao、Yanguang Wang、Weixiang Chen、Xufeng Lin
DOI:10.1016/j.tet.2011.03.087
日期:2011.5
A one-pot synthesis of quinolines via molecular iodine-catalyzed and air-mediated tandem condensation/imino-Diels–Alder/isomerization/oxidation of simple readily available amines, aldehydes, and alkynes has been developed. This methodology was extended to synthesize quinazolines from two molecules of amines and two molecules of glyoxalates.
Palladium-catalyzed selective synthesis of 3,4-dihydroquinazolines from electron-rich arylamines, electron-poor arylamines and glyoxalates
作者:Chao Wu、Jie Wang、Xing-Yu Zhang、Guo-Kai Jia、Zhong Cao、Zilong Tang、Xianyong Yu、Xinhua Xu、Wei-Min He
DOI:10.1039/c8ob01005f
日期:——
synthesis of structurally diverse 3,4-dihydroquinazolines from electron-rich arylamines, electron-poor arylamines and glyoxalates has been developed under mild conditions. This reaction is carried out in a tandem manner constituted by the condensation of arylamines and glyoxalates, the selective Diels–Alder cycloaddition and oxidation processes, in which 4-nitrothiophenol was used as the key ligand.
A convenient synthesis of quinazoline derivatives via cascade imino-Diels-Alder and oxidation reaction
作者:Xue Ming Chen、Hui Wei、Lu Yin、Xing Shu Li
DOI:10.1016/j.cclet.2010.03.003
日期:2010.7
Quinazolinederivatives were synthesized from α-iminoesters via a cascade imino-Diels-Alder and then oxidation reaction catalyzed with CuBr2. This method provided a new strategy for preparing quinazolinederivatives which may be useful in the synthesis of heterocyclic intermediates.
A facile and efficient radical cation salt-induced approach to dihydroquinazoline derivatives has been developed by sp3 CH oxidation, and the method uses readily available glycine esters as the starting material under aerobic oxidation conditions without addition of any additive. The present method provides a convenient and practical route for construction of quinazoline skeleton.
通过sp 3 C H氧化已经开发了一种简便有效的自由基阳离子盐诱导的二氢喹唑啉衍生物的方法,该方法在好氧氧化条件下使用容易获得的甘氨酸酯作为起始原料,而无需添加任何添加剂。本方法为构建喹唑啉骨架提供了方便实用的途径。