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Chinese Chemical Letters 2016年第1期27卷 114-118页

作者： Shahrzad Abdolmohammadi Samira Karimpour Department of Chemistry Faculty of Science East Tehran Branch Islamic Azad University

This paper describes a very simple, efficient synthesis of quinazolinones and chromeno[d]pyrimidinones from the reaction of aryl aldehydes, urea/thiourea and active methylene compounds（dimedone/4-hydroxycoumarin） using nano-sized CuI particles under solvent-free conditions. The highlights of this new method are based on using an effective and recyclable catalyst, affording high yields of products,mild reaction conditions, facile work-up and purification.

关键词： Chromeno[d]pyrimidinones Copper(Ⅰ) iodide nanoparticles quinazolinones Solvent-free conditions

Copper-Catalyzed Aerobic Oxidative Ring Expansion of Isatins: A Facile Entry to Isoquinolino-Fused quinazolinones

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Chinese Journal of Chemistry 2021年第1期39卷 87-92页

作者： Dahan Wang Fuhong Xiao Feng Zhang Huawen Huang Guo-Jun Deng Key Laboratory of Enirnmentoly Friendly Chemistry and Aplication of Ministry of Eduction Hunan Province Key laboratory of Green Organic Synthesis and ApplicationCollege of ChemistryXiangtan UniversityXiangtanHunan 411105China School of Chemistry and Materials Science Hunan Agricutural UniversityChangshaHunan 410128China

A copper-catalyzed aerobic oxidative ring expansion reaction of isatins with 1,2,3,4-tetrahydroisoquinoline for the synthesis of tetra-cyclic quinazolinones has been *** reaction is performed smoothly under simple con... 详细信息

关键词： Copper catalysis Oxidation Cyclization quinazolinones C-H Activation

Magnetically recyclable copper modified GO/Fe_3O_4 catalyst for efficient synthesis of quinazolinones

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Chinese Chemical Letters 2016年第6期27卷 827-831页

作者： Lu-Lu Kong Li-Yan Fan Department of Chemistry Tongji University

A series of bioactive quinazolinones were effectively synthesized by the condensation of halide benzamide with amino acid using magnetically recyclable GO/Fe3O4–CuI as catalyst. Magnetic GO/Fe3O4–CuI was prepared via a simple chemical method and characterized by FTIR, powder XRD, and *** heterogeneous copper catalyst can be easily separated from reaction mixtures by an external permanent magnet and reused without any obvious loss in activity which shows its applicability as a reusable and promising catalyst for quinazolinones synthesis.

关键词： quinazolinones GO/Fe3O4–CuI Magnetically Recyclable Heterogeneous

Facile and efficient synthesis of 2-substituted-Nl-carbethoxy-2,3-dihydro-4(1H)-quinazolinones in fluorous solvent

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Chinese Chemical Letters 2008年第5期19卷 537-540页

作者： Bai Ling Xu Jin Ping Chen Rong Zhang Qiao De Cai Fu lnstitute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050 China Hebei University of Science and Technology Shijiazhuang 050018 China Department of Life Science and Technology Beijing University of Chemical Technology Beijing 100029 China

A facile, efficient and novel approach to access 2-substituted-N1-carbethoxy-2,3-dihydro-4（1H）-quinazolinones was developed by condensation of substituted N-carbethoxyanthranilamide with alkyl, aromatic or heteroaromatic aldehydes in the refluxing 2,2,2- trifluoroethanol or hexafluoroisopropanol using p-toluenesulfonic acid as catalyst.

关键词： quinazolinones Trifluoroethanol Hexafluoroisopropanol Fluorous solvent Solvent effect

Visible light induced tandem reactions:An efficient one pot strategy for constructing quinazolinones using in-situ formed aldehydes under photocatalyst-free and room-temperature conditions

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Chinese Chemical Letters 2021年第4期32卷 1427-1431页

作者： Zongbo Xie Jin Lan Haibo Zhu Gaoyi Lei Guofang Jiang Zhanggao Le Jiangxi Province Key Laboratory of Synthetic Chemistry School of ChemistryBiology and Material ScienceEast China University of TechnologyNanchang 330013China

A facile tandem route has been developed for constructing quinazolinones from various aminobenzamides and in-situ generated *** light was found to play a dual role:first oxidizes the alcohol to the aldehyde and then facilitates its cyclization with o-substituted ***,alcohols are perfe ct alternatives to aldehydes because they are greene r,more available,more economical,more stable,and less toxic tha n *** first reaction step continuously provides material for the second step,which effectively reduces loss through volatilization,oxidation,and polymerization of the aldehyde,while avoiding its toxicity.A variety of quinazolinones can be prepared in the presence of visible light without any additional *** developed synthesis protocol proceeds with the merits of mild conditions,broad substrate scope,operational simplicity,a nd high atom efficiency,with an eco-energy source under metal-free,photocatalyst-free,and ambient conditions.

关键词： Visible light Photocatalyst-free In-situ formed acetaldehyde One pot tandem reaction quinazolinones Room temperature

Synthesis of quinazolinones from o-aminobenzamides and benzyl amines under metal-free conditions

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Chinese Chemical Letters 2016年第1期27卷 21-24页

作者： Xin-Xin Qi Zhen-Zhen Song Jin-Long Gong Zheng-Yu Fang Xiao-Feng Wu Department of Chemistry Zhejiang Sci-Tech University Xiasha Campus Hangzhou 310018 China Department of Anal-colorectal Surgery the First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310006 China Leibniz-Institut für Katalyse e.V. an der Universit t Rostock 18059 Rostock Germany

A convenient and transition-metal free protocol for quinazolinones synthesis with o-aminobenzamides and benzyl amines as substrates has been developed. Using H;O;as the oxidant, various quinazolinones were obtained in... 详细信息

关键词： quinazolinones Metal-free Benzyl amine H2O2

Highly efficient solvent-free synthesis of quinazolin-4(3H)-ones and 2,3-dihydroquinazolin-4(1H)-ones using tetrabutylammonium bromide as novel ionic liquid catalyst

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Chinese Chemical Letters 2010年第5期21卷 550-553页

作者： A.Davoodnia S.Allameh A.R.Fakhari N.Tavakoli-Hoseini Department of Chemistry Faculty of SciencesIslamic Azad UniversityMashhad BranchMashhad 91735-413Iran

A simple and efficient procedure for the synthesis of 2-arylquinazolin-4（3H）-ones has been developed through cyclocondensation of 2-aminobenzamide with aromatic aldehydes using tetrabutylammonium bromide（TBAB） as novel neutral ionic liquid catalyst in the presence of copper（Ⅱ） chloride（CuCl;） as oxidizing agent under solvent-free conditions at 100℃.In the absence of CuCl;and under a nitrogen atmosphere,the unoxidized intermediates,2-aryl-2,3-dihydroquinazolin-4（1H）-ones,were isolated. Treatment of these intermediates with CuCl;in TBAB media gave the oxidized products 2-arylquinazolin-4（3H）-*** the other hand,cyclocondensation of 2-aminobenzamide with aromatic aldehydes in TBAB under microwave irradiation directly gave 2- arylquinazolin-4（3H）-ones.

关键词： quinazolinones Aromatic aldehydes Tetrabutylammonium bromide(TBAB) Copper(Ⅱ) chloride(CuCl2) Microwave irradiation

H-Y-zeolites induced heterocyclization:Highly efficient synthesis of substituted-quinazolin-4(3H) ones under microwave irradiation

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Chinese Chemical Letters 2007年第5期18卷 533-535页

作者： M. Bakavoli O. Sabzevari M. Rahimizadeh Department of Chemistry School of Sciences Ferdowsi University Mashhad 91775-1436 Iran

A highly efficient synthesis of 2-amino-N-substituted-benzamides was performed by the condensation ofisatoic anhydride with several amines in solvent-free conditions under microwave irradiation. H-Y-zeolites induced heterocyclization of these products with ortho-esters under similar conditions afforded the relevant substituted-quinazolin-4（3H）ones in high yields.

关键词： Isatoic anhydride 2-Aminobenzamide H-Y-zeolite quinazolinones

Microwave activated synthesis of 2-aryl-quinazolin-4(3H)ones

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Chinese Chemical Letters 2007年第12期18卷 1466-1468页

作者： M.Bakavoli O.Sabzevari M.Rahimizadeh Department of Chemistry School of SciencesFerdowsi UniversityMashhad 91775-1436Iran

A highly efficient synthesis of 2-aryl-quinazolin-4（3H）ones was performed by one-pot oxidative heterocyclization of 2- aminobenzamide with aldehydes in the presence of potassium permanganate in dimethylacetamide und... 详细信息

关键词： quinazolinones Microwave 2-Aminobenzamide Aldehydes