Copper-Catalyzed Sequential N-Arylation and Aerobic Oxidation: Synthesis of Quinazoline Derivatives
作者:Hua Fu、Changmei Cheng、Qing Liu、Yufen Zhao
DOI:10.1055/s-0033-1339800
日期:——
novel and efficient copper-catalyzedcascade method for the synthesis of quinazolinederivatives has been developed. The protocol uses readily available substituted (2-bromophenyl)methylamines and amidine hydrochlorides as the starting materials, inexpensive CuBr as the catalyst, and economical and environment friendly air as the oxidant, and the corresponding quinazolinederivatives were obtained in
Copper-Catalyzed Synthesis of Quinazolines in Water Starting from o-Bromobenzylbromides and Benzamidines
作者:Chandi C. Malakar、Alevtina Baskakova、Jürgen Conrad、Uwe Beifuss
DOI:10.1002/chem.201200583
日期:2012.7.16
Water makes it possible: The Cu2O‐catalyzed reaction between easily available o‐bromobenzylbromides and benzamidines by using Cs2CO3 as the base and N,N′‐dimethylethylenediamine (DMEDA) as the additive in water as the solvent gives access to substituted quinazolines in a single step with yields ranging from 57 to 85 % (see scheme).
水使成为可能:通过使用Cs 2 CO 3作为碱和N,N'-二甲基乙二胺(DMEDA)作为在水中的添加剂作为溶剂,Cu 2 O催化易得的邻溴代溴化苄与苄am之间的反应一步即可取代取代的喹唑啉,产率为57%至85%(请参阅方案)。
Divergent Synthesis of Quinazolines Using Organocatalytic Domino Strategies under Aerobic Conditions
作者:Raghuram Gujjarappa、Suvik K. Maity、Chinmoy K. Hazra、Nagaraju Vodnala、Shiv Dhiman、Anil Kumar、Uwe Beifuss、Chandi C. Malakar
DOI:10.1002/ejoc.201800746
日期:2018.9.9
A convenient approach to the synthesis of 2‐substituted quinazolines is described based on an organocatalyticdomino reaction. Under the developed conditions, a wide range of substrates was explored, and the desired products were obtained in high yields.
Copper-Catalyzed Synthesis of Quinazoline Derivatives via Ullmann-Type Coupling and Aerobic Oxidation
作者:Chen Wang、Shangfu Li、Hongxia Liu、Yuyang Jiang、Hua Fu
DOI:10.1021/jo101685d
日期:2010.11.19
to quinazoline derivatives has been developed, and the protocol uses readily available substituted (2-bromophenyl)methylamines and amides as the starting materials, and the cascade reactions were performed under air via sequential Ullmann-type coupling and aerobic oxidation without addition of any ligand or additive. The present method provides a convenient and practical strategy for synthesis of quinazoline