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
An efficient Cu-catalyzed synthesis of quinazolines via the C–N bond formation reactions between N–H bonds of amidines and C(sp3)–H bonds adjacent to sulfur or nitrogen atoms in the commonly used solvents, such as DMSO, DMF, DMA, NMP or TMEDA, followed by intramolecular C–C bond formation reactions was developed for the first time.
Ultrasound-Assisted Preparation of Copper(I) Oxide Nanocubes: High Catalytic Activity in the Synthesis of Quinazolines
作者:Amol B. Raut、Abhishek R. Tiwari、Bhalchandra M. Bhanage
DOI:10.1002/cctc.201601330
日期:2017.4.7
energy‐dispersive X‐ray spectroscopy, UV/Vis spectroscopy, differential scanning calorimetry with thermogravimetric analysis, and FTIR spectroscopy. The Cu2O nanocubes were employed as a heterogeneous nanocatalyst and were found to be highly active in the preparation of quinazolines by the tandem cyclization of 2‐bromobenzaldehydes with amidines under ligand‐free conditions. Various quinazolines could be prepared