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13 results on '"Xu Ge"'

1. ChemInform Abstract: (Pentamethylcyclopentadienyl)cobalt(III)-Catalyzed Oxidative [4 + 2] Annulation of N-H Imines with Alkynes: Straightforward Synthesis of Multisubstituted Isoquinolines

Author

Qingjiang Li, Shang-Shi Zhang, Honggen Wang, Jia-Qiang Wu, Chun-Yong Jiang, Xu-Ge Liu, Shi-Yong Chen, and Dong-Hang Tan

Subjects
Annulation, Chemistry, chemistry.chemical_element, General Medicine, Oxidative phosphorylation, Medicinal chemistry, Cobalt, Catalysis
Published
2016
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2. ChemInform Abstract: Direct Radical Trifluoromethylthiolation and Thiocyanation of Aryl Alkynoate Esters: Mild and Facile Synthesis of 3-Trifluoromethylthiolated and 3-Thiocyanated Coumarins

Author

Wen-Xin Lv, Honggen Wang, Dong-Hang Tan, Yunyun Chen, Yao-Fu Zeng, Qingjiang Li, and Xu-Ge Liu

Subjects
chemistry.chemical_compound, chemistry, Aryl, Functional group, Organic chemistry, General Medicine, Radical cyclization
Abstract

A mild and convenient oxidative radical cyclization of aryl alkynoate esters for the synthesis of 3-trifluoromethylthiolated and 3-thiocyanated coumarins has been developed using AgSCF3 and AgSCN as the corresponding radical sources, respectively. This protocol is characterized by readily available starting materials, excellent functional group tolerance and good yields.

Published
2016
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3. ChemInform Abstract: Cp*Co(III)-Catalyzed Annulations of 2-Alkenylphenols with CO: Mild Access to Coumarin Derivatives

Author

Jia-Qiang Wu, Qingjiang Li, Shang-Shi Zhang, Xu-Ge Liu, Chun-Yong Jiang, and Honggen Wang

Subjects
Reaction conditions, chemistry.chemical_compound, chemistry, Functional group, Herniarin, Substrate (chemistry), Total synthesis, Xanthyletin, General Medicine, Coumarin, Medicinal chemistry, Catalysis
Abstract

Cp*Co(III)-catalyzed annulations of 2-alkenylphenols with CO for the synthesis of coumarin derivatives have been developed. The reaction features mild reaction conditions, broad substrate scope, and good functional group tolerance. Preliminary mechanistic studies were conducted, suggesting that C–H activation is the turnover limiting step. Furthermore, the efficiency of this reaction was demonstrated by the rapid total synthesis of three natural products herniarin, xanthyletin, and seselin.

Published
2016
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5. ChemInform Abstract: Cp*Co(III)-Catalyzed Direct Functionalization of Aromatic C-H Bonds with α-Diazomalonates

Author

Honggen Wang, Jia-Qiang Wu, Qingjiang Li, Shang-Shi Zhang, and Xu-Ge Liu

Subjects
Chemistry, Surface modification, Regioselectivity, Organic chemistry, General Medicine, Alkylation, Medicinal chemistry, Catalysis
Abstract

A highly regioselective alkylation of arenes and heteroarenes with α-diazomalonates is achieved under the assistance of pyrazolyl and pyrimidinyl directing groups.

Published
2015
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6. ChemInform Abstract: Mild Rhodium(III)-Catalyzed C-H Allylation with 4-Vinyl-1,3-dioxolan-2-ones: Direct and Stereoselective Synthesis of (E)-Allylic Alcohols

Author

Wen-Xin Lv, Xu-Ge Liu, Ye-Xing Lao, Jia-Qiang Wu, Honggen Wang, Yao-Fu Zeng, Yao Liu, Dong-Hang Tan, and Shang-Shi Zhang

Subjects
Allylic rearrangement, chemistry, chemistry.chemical_element, Stereoselectivity, General Medicine, Medicinal chemistry, Rhodium, Catalysis
Abstract

The scalable and operationally simple transformation does not require exclusion of air and moisture and tolerates a range of functional groups.

Published
2015
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