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Transformation of aldehydes or alcohols to amides at room temperature under aqueous conditions

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Chinese Chemical Letters 2017年第7期28卷 1597-1599页

作者： Dao-Qing Dong Shuang-Hong Hao Hui Zhang zu-li wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China

A novel and efficient method for the synthesis of amide has been developed. The reactions proceeded smoothly under aqueous conditions at room temperature and generated the corresponding products in good to excellent yields. It is worth noting that alkyl amines which did not react in known approaches are well tolerated in our system.

关键词： Aldehyde Amine Amides Aqueous

Alumina-supported heteropoly acid:An efficient catalyst for the synthesis of azaarene substituted 3-hydroxy-2-oxindole derivatives via C(sp^3)-H bond functionalization

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Chinese Chemical Letters 2015年第5期26卷 599-602页

作者： Shuang-Hong Hao Xue-Yan Zhang Dao-Qing Dong zu-li wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University

A method of C（sp^3）-H bond functionalization of methyl azaarenes catalyzed by alumina-supported heteropoly acid and addition to isatins was developed. This transformation could be used for the synthesis of biologically important 3-hydroxy-2-oxindole derivatives in good to excellent yields and the catalyst could be reused for six times without significant decrease in activity.

关键词： Alumina-supported heteropoly acid C(sp^3)-H functionalization Azaarenes 3-Hydroxy-2-oxindoles Isatin

Persulfate promoted tandem radical cyclization of ortho-cyanoarylacrylamides with oxamic acids for construction of carbamoyl quinoline-2,4-diones under metal-free conditions

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Chinese Chemical Letters 2021年第11期32卷 3632-3635页

作者： Qing-Qing Han Yuan-Yuan Sun Shao-Hui Yang Jing-Cheng Song zu-li wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China

An efficient and practical methods for the synthesis of carbamoyl quinoline-2,4-diones via the reaction of ortho-cyanoarylacrylamides with oxamic acids was *** cyclic reaction could be performed efficiently under meta... 详细信息

关键词： Ortho-cyanoarylacrylamides Oxamic acids Quinoline-2.4-diones Meta I-free Persulfates

Visible-light induced cascade radical cyclization of sulfinic acids and o-(allyloxy)arylaldehydes towards functionalized chroman-4-ones

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Chinese Chemical Letters 2020年第12期31卷 3255-3258页

作者： Guang-Hui li Qing-Qing Han Yuan-Yuan Sun De-Mao Chen zu-li wang Xin-Ming Xu Xian-Yong Yu College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingda 266109China College of Chemistry and Chermical Engineering Yantai UniversityYantai 264005China School of Chernistry and Chemical Engineering Hunan UIniversity of Science and TechnologyXiangtan 411201China

An efficient method for the synthesis of functionalized chroman-4-ones induced by visible light via the radical cyclization reaction of sulfinic acids and o-(allyloxy)arylaldehydes at room temperature was *** corresponding products were isolated with moderate to good *** mechanism was proposed fo r this trans ***-microbial activity of some desired compounds we re screened.

关键词： Visible light Sulfinic acids Radical cyclization Chroman-4-one o-(Allyloxy)arylaldehydes

Hypervalent iodine mediated C-H amination of quinoxalinones with heteroaromatic amines under metal-free conditions

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Chinese Chemical Letters 2021年第8期32卷 2559-2561页

作者： Qing-Qing Han De-Mao Chen zu-li wang Yuan-Yuan Sun Shao-Hui Yang Jing-Cheng Song Dao-Qing Dong College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China

An efficient and facile method for C-H amination of quinoxalinones with heteroaromatic amines under metal-free conditions has been *** the presence of hypervalent PIDA reagent,the desired products with various groups ... 详细信息

关键词： Hypervalent iodine Amination Quinoxalinones Metal-free Heteroaromatic amines

Direct construction of sulfenylated pyrazoles catalyzed by I_2 at room temperature

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Chinese Journal of Catalysis 2017年第10期38卷 1664-1667页

作者： Shuang‐Hong Hao li‐Xia li Dao‐Qing Dong zu‐li wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University Qingdao 266109 Shangdong China

An iodine‐catalyzed sulfenylation of pyrazoles at room temperature is described,in which a variety of pyrazoles were well tolerated and the desired products were obtained in good to excellent yields.

关键词： C–S bond Iodine Room temperature Disulfides Sulfenylation

Visible light induced four component reaction of styrene for the access of thiodifluoroesters

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Chinese Chemical Letters 2023年第9期34卷 143-146页

作者： Shao-Hui Yang Jing-Cheng Song Hao Yang Meng-Yu Zhou Ze-Hui Wei Jia-Hui Gao Dao-Qing Dong zu-li wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass Nanjing Forestry UniversityNanjing 210037China

The visible light induced multicomponent reaction of styrene,carbon disulfide,amine and ethyl difluorobromoacetate for the synthesis of thiodifluoroesters is *** developed protocol offers a facile and general route to access various valuable thiodifluoroesters in moderate to good *** mechanistic studies revealed that a radical process might be involved in this transformation.

关键词： Green chemistry Visible light Thiodifluoroester Radical Multicomponent reaction

C(sp^(3))-H bond functionalization of oximes derivatives via 1,5-hydrogen atom transfer induced by iminyl radical

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Chinese Chemical Letters 2022年第3期33卷 1199-1206页

作者： Dao-Qing Dong Jing-Cheng Song Shao-Hui Yang Qi-Xue Qin zu-li wang En-Xuan Zhang Yuan-Yuan Sun Qing-Qing Han Shan Yue College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China Asymchem life Science(Tianjin)Co. Ltd.Tianjin 300457China

Oximes derivatives have been vastly used in organic synthesis. In this review, C(sp^(3))-H bond functionalization of oximes derivatives via iminyl radical induced 1,5-hydrogen atom transfer was discussed. According to the different type of products, this review was divided into three parts: (1) C(sp^(3))-H bond functionalization for C-C bond formation. (2) C(sp^(3))-H bond functionalization for C-N bond formation. (3) C(sp^(3))-H bond functionalization for C-S, C-F bond formation.

关键词： Oximes derivatives 1 5-hydrogen atom transfer Iminyl radicals C(sp^(3))-H Bond Visible light

Visible-light-induced deoxygenative C2-sulfonylation of quinoline N-oxides with sulfinic acids for the synthesis of 2-sulfonylquinoline via radical reactions

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Chinese Journal of Catalysis 2019年第10期40卷 1494-1498页

作者： Dao-Qing Dong li-Xia li Guang-Hui li Qi Deng zu-li wang Shu Long College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109ShandongChina School of Chemistry and Chemical Engineering Hunan University of Science and TechnologyXiangtan 411201HunanChina Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and TechnologyChangsha 410114HunanChina

A simple and efficient method for the synthesis of 2-sulfonylquinoline from deoxygenative C2-sulfonylation of quinoline N-oxides with sulfinic acid induced by visible light is *** protocol shows a broad substrate scop... 详细信息

关键词： Quinoline N-oxides Sulfinic acid 2-Sulfonylquinoline Visible light Radical reaction