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Chinese Chemical Letters 2002年第8期13卷 717-720页

作者： Zheng LI xi cun wang College of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhou 730070

The 1-aryloxyacetyl-4-(4-nitrophenyloxyacetyl)-thiosemicarbazides (3a-h) are synthe- sized via reaction of 4-nitrophenyloxyacetyl chloride with ammonium thiocyanate and aryloxyacetic hydrazides (2a-h) under phase tran... 详细信息

关键词： Diaryloxyacetyl thiosemicarbazide phase transfer catalysis microwave irradiation.

Microwave-prompted Rapid and Efficient Synthesis of Diacyl Thiosemicarbazides and Semicarbazides in Solvent and Catalyst Free Condition

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Chinese Chemical Letters 2005年第8期16卷 1027-1030页

作者： xi cun wang Zheng Jun QUAN Man Gang wang Zheng LI Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070

Eighteen 1-aroyl-4-（2-iodobenzoyl）thiosemicarbazides and corresponding semicarbazides were synthesized in excellent yield under microwave irradiation in solvent and catalyst free condition.

关键词： Microwave irradiation 1,4-diaroyl thiosemicarbazides 1,4-diaroyl semicarbazides,solvent-free synthesis.

A domino desulfitative coupling and decarboxylative coupling of 3,4-dihydropyrimidine-2-thiones with copper(Ⅰ)carboxylates

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Chinese Chemical Letters 2017年第5期28卷 1074-1078页

作者： Zhang Zhang Shi-Hong Lu Bin Xu xi-cun wang Key Laborarory of Eco-Environment-Related Polymer Materials Ministry of Education of ChinaLanzhou 730070China Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China

A novel and general carbon-nitrogen and carbon-carbon cross-coupling reaction between 3,4-dihydropyrimidine-2-thiones and copper（Ⅰ） carboxylates were performed in the presence of palladium *** copper（Ⅰ） carboxylates act not only as desulfurative reagents but also as sources of carbon nudeophiles.A wide array of highly substituted and functionalized pyrimidines scaffolds were synthesized in good yields.

关键词： Dihydropyrimidinthiones Desulfitative Copper(Ⅰ) carboxylates Decarboxylative Cross-coupling

PEG-OSO_3H as an efficient and recyclable catalyst for the synthesis of β-amino carbonyl compounds via the Mannich reaction in PEG-H_2O

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Chinese Chemical Letters 2012年第4期23卷 423-426页

作者： xi cun wang Li Jia Zhang Zhang Zhang Zheng Jun Quan Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China

Sulfuric acid-modified polyethylene glycol 6000（PEG-OSO_3H） was applied as an efficient and recyclable catalyst for the synthesis ofβ-amino carbonyl compounds via the Mannich reaction between aldehydes,aromatic ketones and aromatic amines at room temperature using PEG400-H_2O（1：1） as environment-friendly *** reactions were completed in short times and mild reaction conditions with good to excellent yields.

关键词： Mannich reaction β-Amino carbonyl compounds PEG-OSO_3H Environmentally benign

Synthesis of N-benzothiazol-2-yl-amides by Pd-catalyzed C(sp^2)–H functionalization

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Chinese Chemical Letters 2015年第11期26卷 1376-1380页

作者： Jun-Ke wang Ying-xiao Zong xi-cun wang Yu-Lai Hu Guo-Ren Yue Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities College of Chemistry and Chemical Engineering Hexi University Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Gansu Engineering Laboratory of Applied Mycology Hexi University

A catalytic synthesis of N-benzothiazol-2-yl-amides from 1-acyl-B-（phenyl）thioureas was achieved in the presence of a palladium catalyst through the C（sp2）-H functionalization/C-S bond formation, This synthetic me... 详细信息

关键词： BenzothiazolePal-catalyzed1 -Acyl-3 -phenylthioureaC-H functionalizationL-Proline

PEG-400 as an efficient reaction medium for the synthesis of 2,4,5-triaryl-1H-imidazoles and 1,2,4,5-tetraaryl-1H-imidazoles

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Chinese Chemical Letters 2009年第1期20卷 44-47页

作者： xi cun wang Hai Peng Gong Zheng Jun Quan Lei Li He Lin Ye Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 PR China

An efficient protocol for the one-pot multicomponent synthesis of various 2,4,5 -triaryl- 1H-imidazoles and 1,2,4,5 -tetraaryl- 1H- imidazoles using PEG-400 as reaction medium is described. This method has the advanta... 详细信息

关键词： 2,4,5-Triaryl-1H-imidazoles 1,2,4,5-Tetraaryl-1H-imidazoles PEG-400 Benzil

Visible light promoted polyhalomethylation of alkenes: alkylation and cyclization

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Organic Chemistry Frontiers 2022年第4期9卷 1004-1009页

作者： Tong-Lin wang Bo-Sheng Zhang Jing-Jiang Liu xiao-Jun Liu xi-cun wang Zheng-Jun Quan Laboratory of Eco-Environment-Related Polymer Materials Ministry of EducationChina.College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhouGansu 730070People’s Republic of China

We report a visible light promoted carbochloromethylation of 2-bromomethyl acrylate and N-arylmethacrylamide,and a series of trihalomethyl substituted allylic acid esters and indolone derivatives were *** reaction used common and inexpensive chloroform and tribromomethane as tri-halomethyl reagents,iodobenzene diacetate(PIDA)as an oxidant and Eosin Y as a *** reaction conditions are mild and the substrate scope is wide.

关键词： promoted light cyclization

Direct amination of pyrimidin-2-yl tosylates with aqueous ammonia under metal-free and mild conditions

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Chinese Chemical Letters 2015年第6期26卷 667-671页

作者： Hai-Peng Gong Yue Zhang Yu-xia Da Zhang Zhang Zheng-Jun Quan xi-cun wang Laboratory of Eco-Environment-Related Polymer Materials Ministry of EducationGansu Key Laboratory of Polymer MaterialsCollege of Chemistry and Chemical EngineeringNorthwest Normal University

A metal-flee synthesis of pyrimidine functionalized primary amines via direct amination of pyrimidin-2- yl tosylate with aqueous ammonia has been developed under mild conditions. The desired products pyrimidin-2-amine... 详细信息

关键词： Ammonia 2-Aminopyrimidines Pyrimidin-2-yl tosylate PEG-400

Radical cation salts induced domino reaction of anilines with enol ethers:Synthesis of 1,2,3,4-tetrahydroquinoline derivatives

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Chinese Chemical Letters 2011年第6期22卷 671-674页

作者： xiao Dong Jia Yan Ren Cong Dde Huo Wen Juan wang xiang Ning Chen Qiong Fu xi cun wang Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of EducationGansu Key Laboratory of Polymer Materials College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000China

A domino reaction of anilines with cyclic and acyclic enol ethers induced by catalytic amounts of TBPA^（·＋）（5 mol%） was investigated and a series of 2,4-disubstituted-1,2,3,4-tetrahydroquinolines were *** from cyclic enol ethers, when acyclic enol ethers were used in the reaction,they serve as surrogates of acetaldehyde,producing a series of 2-methyl-4- anilino-1,2,3,4-tetrahydroquinolines.A single electron transfer mechanism was proposed to rationalize the products formation.

关键词： Domino reaction Radical cation salts 1 2 3 4-Tetrahydroquinoline Enol ether

Reductive Coupling of Aryl Halides via C-H Activation of Indene

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Chinese Journal of Chemistry 2021年第6期39卷 1573-1579页

作者： Bo-Sheng Zhang Ying-Hui Yang Fan wang Xue-Ya Gou xi-cun wang Yong-Min Liang Yuke Li Zheng-Jun Quan College of Chemistry and Chemical Engineering Gonsu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional MaterialsNorthwest Normal UniversityLanzhouGansu 730070China State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhouGansu 730000China Department of Chemistry and Centre for Scientific Modeling and Computation Chinese University of Hong KongShatinHong KongChina

This paper describes the first case of a reductive coupling reaction with indene,a non-heteroatom olefin used as a reducing *** scope of the substrate is *** homo-coupling,cross-coupling,and synthesis of 12 and 14-membered rings were *** control experiment,indene-product curve and density functional theory calculations showed that the η^(3)-palladium indene intermediate was formed by C-H activation in the presence of cesium *** speculate that the final product was obtained through a Pd(IV)intermediate or aryl ligand *** addition,we excluded the formation of palladium anion(Pd(0)^(-))intermediates.

关键词： C-C coupling Palladium Reduction Indene C-H activation