Search

Your search keyword '"Ma, Jun"' showing total 187 results
Start Over Author "Ma, Jun" Search Limiters Peer Reviewed Journal cheminform
187 results on '"Ma, Jun"'

1. ChemInform Abstract: Enantioselective Intramolecular C-H Insertion of Donor and Donor/Donor Carbenes by a Nondiazo Approach.

Author

Zhu, Dong, Ma, Jun, Luo, Kui, Fu, Hongguang, Zhang, Li, and Zhu, Shifa

Subjects
*CYCLOPROPANATION, *ENANTIOSELECTIVE catalysis, *CARBON-hydrogen bonds, *INSERTION reactions (Chemistry), *CARBENES, *DIAZO compounds, *ELECTRON donors
Abstract

The enantioselective intramolecular C-H insertion and cyclopropanation reactions of donor- and donor/donor-carbenes by a nondiazo approach are reported. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

2. ChemInform Abstract: Base-Promoted Domino Reaction for the Synthesis of 2,3-Disubstituted Indoles from 2-Aminobenzaldehyde/2-Amino Aryl Ketones, Tosylhydrazine, and Aromatic Aldehydes.

Author

Wu, Yan‐Dong, Ma, Jun‐Rui, Shu, Wen‐Ming, Zheng, Kai‐Lu, and Wu, An‐Xin

Subjects
*CHEMICAL equations, *INDOLE derivatives, *DOMINO toppling, *CHARTS, diagrams, etc.
Abstract

A diagram is presented which explains the chemical process of base-promoted Domino Reaction for the synthesis of 2,3-Disubstituted Indoles from 2-Aminobenzaldehyde/2-Amino Aryl Ketones, Tosylhydrazine, and Aromatic Aldehydes.

Published
2016
Full Text
View/download PDF

7. ChemInform Abstract: Zinc(II)-Catalyzed Reactions of Carbon Dioxide and Propargylic Alcohols to Carbonates at Room Temperature.

Author

Hu, Jiayin, Ma, Jun, Zhu, Qinggong, Qian, Qingli, Han, Hongling, Mei, Qingqing, and Han, Buxing

Subjects
*PROPARGYL alcohol, *CARBON dioxide, *ZINC catalysts, *CARBONATES, *TEMPERATURE effect
Abstract

Alkylidiene cyclic carbonates are prepared by carboxylative cyclization of propargylic alcohols with CO2 using ZnI2/NEt3 as synergistic catalytic system. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

17. ChemInform Abstract: Palladium-Catalyzed Annulation of 2,2′-Dibromobiphenyls with Alkynes: Synthesis of Functionalized Phenanthrenes and Dibenzochrysenes.

Author

Ma, Jun, Li, Gaoqiang, Qiao, Yan, Tu, Jingxuan, Liu, Sha, and Xu, Feng

Subjects
*PHENANTHRENE derivatives, *PALLADIUM catalysts, *CHARTS, diagrams, etc.
Abstract

A diagram is presented which shows the derivatives of phenanthrene, the annulation of the catalysis of palladium, and the synthesis of phenanthrenes and dibenzochrysenes.

Published
2016
Full Text
View/download PDF

24. ChemInform Abstract: Transformation of Atmospheric CO2 Catalyzed by Protic Ionic Liquids: Efficient Synthesis of 2-Oxazolidinones.

Author

Hu, Jiayin, Ma, Jun, Zhu, Qinggong, Zhang, Zhaofu, Wu, Congyi, and Han, Buxing

Subjects
*ATMOSPHERIC carbon dioxide, *IONIC liquids, *OXAZOLIDINONES synthesis, *IMIDAZOLES, *CHEMICAL yield
Abstract

The reaction of carbon dioxide with propargylic amines is promoted by a protic ionic liquid such as 1,8-diazabicyclo[5.4.0]-7-undecenium 2-methylimidazolide (DBM) that acts also as a solvent to give the corresponding oxazolidinones in high yields. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

25. ChemInform Abstract: Efficient Approach to 2-Hydroxy-2,3-dihydrofuran Derivatives and Its Application for the Synthesis of Novel 4-(1H-Pyrazol-4-yl)pyridazines.

Author

Ma, Jun‐Rui, Shu, Wen‐Ming, Zheng, Kai‐Lu, Ni, Fan, Yin, Guo‐Dong, and Wu, An‐Xin

Subjects
*PYRIDAZINES, *AROMATIC compound synthesis, *FURAN derivatives, *CHEMICAL reactions, *SOLUTION (Chemistry)
Abstract

A variety of 2-hydroxydihydrofuran derivatives are synthesized under mild reaction conditions by a domino reaction of readily available 1,4-enediones with phenacyl pyridinium halides. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

30. ChemInform Abstract: A Route to Convert CO2: Synthesis of 3,4,5-Trisubstituted Oxazolones.

Author

Hu, Jiayin, Ma, Jun, Zhang, Zhaofu, Zhu, Qinggong, Zhou, Huacong, Lu, Wenjing, and Han, Buxing

Subjects
*OXAZOLINE derivatives, *AMINES, *OXAZOLONE
Abstract

The title compounds (III) are obtained by reaction of CO2 with various propargylic amines using a combination of two ionic liquids as promoter under metal-free reaction conditions. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

31. ChemInform Abstract: One-Pot Synthesis of Polyfunctional Pyrazoles: An Easy Access to α-Diazoketones from Arylglyoxal Monohydrates and Tosylhydrazine.

Author

Shu, Wen‐Ming, Ma, Jun‐Rui, Zheng, Kai‐Lu, Sun, Hui‐Ying, Wang, Mei, Yang, Yan, and Wu, An‐Xin

Subjects
*PYRAZOLES, *HETEROCYCLIC compounds synthesis, *DIAZOKETONES
Abstract

Intermediate formation of α-diazoketones (II) from glyoxal monohydrates (I) and tosylhydrazine is applied in the one-pot synthesis of 3-acylpyrazoles (IV) and (VI) as well as benzo[f]indazolediones (VIII) or chromeno[3,4-c]pyrazolones (XI). [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

38. ChemInform Abstract: An Efficient Synthesis of Novel Fused Cycloheptatrienes Through Mn(II)-Mediated Formal Intermolecular [2 + 2 + 2 + 1] Cycloaddition.

Author

Shu, Wen‐Ming, Ma, Jun‐Rui, Yang, Yan, and Wu, An‐Xin

Subjects
*CYCLOALKENES, *ALICYCLIC compounds, *ORGANIC compounds, *CATALYSTS, *ORGANIC synthesis
Abstract

Application of 1,4-benzoquinone, juglone or 1,4-anthracenedione do not yield the corresponding products. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

41. ChemInform Abstract: Efficient Synthesis of Quinazoline-2,4(1H,3H)-diones from CO2 Using Ionic Liquids as a Dual Solvent-Catalyst at Atmospheric Pressure.

Author

Lu, Wenjing, Ma, Jun, Hu, Jiayin, Song, Jinliang, Zhang, Zhaofu, Yang, Guanying, and Han, Buxing

Subjects
*QUINAZOLINE, *CARBON dioxide, *IONIC liquids, *SOLVENTS, *ATMOSPHERIC pressure, *CATALYTIC activity
Abstract

The dual solvent-catalyst [bmim]OAc can be reused at least five times without an observable decrease in catalytic activity. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results