Niacin as a Potent Organocatalyst towards the Synthesis of Quinazolines Using Nitriles as C-N Source
作者:Raghuram Gujjarappa、Nagaraju Vodnala、Velma Ganga Reddy、Chandi C. Malakar
DOI:10.1002/ejoc.201901651
日期:2020.2.21
An organocatalyzed protocol has been described for the comprehensive synthesis of 2‐substituted quinazolines usingnitriles as C–N source. The developed reaction conditions are suitable for a wide range of substrates providing the desired products in excellent yields.
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
A palladium-catalyzed reductive carbonylation reaction has been developed for the synthesis of quinazolines. With N-(2-iodophenyl)benzimidamide as starting materials, a series of quinazolines were obtained through the aromatic aldehyde intermediates in moderate to good yields with good functional group compatibilities. In this system, silane act as better nucleophile than amidine.
Copper-catalyzed synthesis of quinazolines <i>via</i> cascade cyclization/hydrodehalogenation
作者:Peng Ma、Yuhang Wang、Jianhui Wang、Ning Ma
DOI:10.1039/d3nj00541k
日期:——
We report a Cu(I)-catalyzed synthesis of quinazolines via cascade cyclization/hydrodehalogenation by using acetamide as a nitrogen source and H2O as a hydrogen source. The current reaction provides a unified modular route from readily available starting materials to quinazolines in which aryl aldehydes can be decorated with diverse substitutions. In this reaction, acetamide becomes an interesting alternative
我们报道了使用乙酰胺作为氮源和 H 2 O 作为氢源,通过级联环化/加氢脱卤,Cu( I ) 催化合成喹唑啉。目前的反应提供了一个统一的模块化路线,从容易获得的起始材料到喹唑啉,其中芳基醛可以用不同的取代物进行修饰。在这个反应中,乙酰胺成为令人不快的氨和有毒脒的有趣替代品。
Synthesis of 2-arylquinazolines by Chan–Evans–Lam coupling of 2-formylphenylboronic acids with amidines
作者:Vitalii V. Solomin、Darija Zaharova、Aigars Jirgensons
DOI:10.1007/s10593-024-03314-2
日期:2024.4
A method for the synthesis of 2-arylquinazolines is described which involves Chan–Evans–Lam coupling of 2-formylphenylboronic acids with amidines. The reaction is performed at mild conditions compatible with the range of functional groups and is cost-efficient, provided by usage of inexpensive catalyst and reagents. The synthesis method of 2-arylquinazolines presented is of with scope in both 2-formylphenylboronic