Visible-Light-Induced Benzylic C-H Functionalization for the Synthesis of 2-Arylquinazolines
作者:Jingchang Zhang、Qibao Wang、Yongen Guo、Lin Ding、Maocai Yan、Yinglin Gu、Jiajia Shi
DOI:10.1002/ejoc.201900996
日期:2019.9.15
Visible‐light‐induced synthesis of substituted quinazolines using1‐(2‐aminoaryl)ethan‐1‐ones in conjunction with arylmethanamines as starting materials.
Palladium-catalyzed one pot 2-arylquinazoline formation via hydrogen-transfer strategy
作者:Huamin Wang、Hui Chen、Ya Chen、Guo-Jun Deng
DOI:10.1039/c4ob01296h
日期:——
The palladium catalytic system was first applied to 2-arylquinazoline synthesis via hydrogen transfer methodology. Various (E)-2-nitrobenzaldehyde O-methyl oximes reacted easily with alcohols or benzyl amines to provide N-heterocyclic compounds in good to high yields. Similarly, the heterocyclic products could be prepared by the reaction of 1-(2-nitrophenyl)ethanone, urea and benzyl alcohols. In these reactions, the nitro group was reduced in situ by hydrogen generated from the alcohol dehydrogenation step.
One-Pot Synthesis of 2-Arylquinazolines and Tetracyclic Isoindolo[1,2-<i>a</i>]quinazolines<i>via</i>Cyanation Followed by Rearrangement of<i>ortho</i>-Substituted 2-Halo-<i>N</i>-arylbenzamides
作者:Sachin D. Gawande、Manoj R. Zanwar、Veerababurao Kavala、Chun-Wei Kuo、R. R. Rajawinslin、Ching-Fa Yao
DOI:10.1002/adsc.201400505
日期:2015.1.12
2‐arylquinazoline derivatives and tetracylic isoindolo[1,2‐a]quinazoline via cyanation followed by rearrangement of ortho‐substituted 2‐halo‐N‐arylbenzamides is described. Using dimethyl sulfoxide (DMSO) as the solvent, the cleavage of the tetracyclic isoindole fused quinazoline leads to the formation of 2‐arylquinazoline derivatives. When 1,4‐dioxane is used as the solvent, tetracyclic isoindole fused
Microwave-Promoted Syntheses of Quinazolines and Dihydroquinazolines from 2-Aminoarylalkanone <i>O</i>-Phenyl Oximes
作者:Fernando Portela-Cubillo、Jackie S. Scott、John C. Walton
DOI:10.1021/jo900629g
日期:2009.7.17
was included in the reaction mixture, fully aromatic quinazolines were produced in high yields by a rapid and convenient process. The method worked well with alkyl, aryl, and heterocyclic aldehydes and for a variety of substituents in the benzenic part of the molecule. Similar reactions employing ketones instead of aldehydes were less efficient. Although some dihydroquinazolines did form, they were accompanied
Fe–FeO<sub><i>x</i></sub> nanoparticles encapsulated in N-doped carbon material: a facile catalyst for selective synthesis of quinazolines from alcohols in water
作者:Fei Wang、Fuying Zhu、Enxiang Ren、Qiang Zhang、Guo-Ping Lu、Yamei Lin
DOI:10.1039/d2cy01562e
日期:——
and green synthetic strategies for N-heterocycle synthesis has always been a research hotspot in organic synthesis. A facile one-pot iron-catalyzed synthesis of quinazolinesfrom alcohols in water has been disclosed for the first time, in which a N-doped carbon encapsulated Fe–FeOx material (Fe–FeOx@NC) is applied as a catalyst, and various quinazolines (25 examples, 62–99%) are synthesized. The iron
开发高效、绿色的N-杂环合成策略一直是有机合成领域的研究热点。首次公开了一种简便的铁催化水中醇合成喹唑啉的方法,其中将 N 掺杂碳包覆的 Fe-FeO x材料(Fe-FeO x @NC)用作催化剂,并合成了各种喹唑啉(25 个实例,62-99%)。Fe-FeO x @NC中被氮掺杂碳层包裹的铁纳米颗粒具有很强的抗毒能力,是该反应具有高性能的主要原因。该协议提供了几个优点,包括使用空气作为氧化剂、水作为溶剂、可回收铁作为催化剂以及高原子和步骤经济性。