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5 results on '"Shen, Xiuli"'

1. ipso-Nitration of Arylboronic Acids with Copper Nitrate and Trifluoroacetic Acid

Author

Mengping Guo, Shen Xiuli, Meiyun Lv, Xiuling Zhou, Zhu-Qing Wang, and Yongju Wen

Subjects
chemistry.chemical_compound, chemistry, 010405 organic chemistry, Nitration, Organic Chemistry, Trifluoroacetic acid, Organic chemistry, 010402 general chemistry, 01 natural sciences, Biochemistry, Copper nitrate, 0104 chemical sciences
Published
2018

2. Synthesis of aryloxyacetonitriles based on arylboronic acids with 2-bromoacetonitrile

Author

Shen Xiuli, Lanjiang Zhou, Mengping Guo, Yangping Kang, Yongju Wen, and Li Yingmin

Subjects
Bromoacetonitrile, 010405 organic chemistry, Chemistry, Organic Chemistry, Substituent, 010402 general chemistry, 01 natural sciences, Biochemistry, Combinatorial chemistry, 0104 chemical sciences, chemistry.chemical_compound, Product (mathematics), Yield (chemistry), Drug Discovery, Hydrogen peroxide
Abstract

A new and efficient protocol for the synthesis of aryloxyacetonitriles based on arylboronic acids with 2-bromoacetonitrile has been developed using eco-friendly hydrogen peroxide as oxidant under metal-free conditions. This method is compatible with arylboronic acid attached sensitive substituent and obtains desired product in moderate to good yield.

Published
2020

3. Efficient P, O chelate palladium(II)/AgNO3 cocatalyzed homocoupling of aromatic terminal alkynes in aqueous media under ambient atmosphere

Author

Shen Xiuli, Mengping Guo, Yongju Wen, Meiyun Lv, Bo Chen, and Xiuling Zhou

Subjects
Aqueous medium, 010405 organic chemistry, Stereochemistry, Organic Chemistry, chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, Biochemistry, 0104 chemical sciences, Inorganic Chemistry, Atmosphere, chemistry, Terminal (electronics), Polymer chemistry, Chelation, Palladium
Abstract

A new and efficient protocol for the P, O chelate Pd(II)/AgNO3 cocatalyzed oxidative homocoupling reaction of aromatic terminal alkynes in the synthesis of symmetrical 1,4-disubstituted-1,3-diynes was described in aqueous media under ambient atmosphere. The results showed that both NEt3 and THF/H2O (in 4:1 proportion) played crucial roles in the reaction. In contrast, this protocol employs a low palladium(II) complex loading and AgNO3 as cocatalyst to obtain the homocoupled products in moderate to good yields.

Published
2016
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4. [(PhCH2O)2P(CH3)2CHNCH(CH3)2]2PdCl2/CuI as Cocatalyst for Coupling-Cyclization of 2-Iodophenol with Terminal Alkynes in Water

Author

Leiqing Fu, Shen Xiuli, Mengping Guo, Lanjiang Zhou, Panli Jiang, and Yongju Wen

Subjects
terminal alkynes, Pd(II)/CuI co-catalysts, 010405 organic chemistry, water, chemistry.chemical_element, lcsh:Chemical technology, 010402 general chemistry, 01 natural sciences, Combinatorial chemistry, Catalysis, 0104 chemical sciences, lcsh:Chemistry, Coupling (electronics), chemistry.chemical_compound, coupling-cyclization reactions, lcsh:QD1-999, chemistry, Terminal (electronics), 2-substituted benzo[b]furans, Furan, 2-iodophenol, lcsh:TP1-1185, Physical and Theoretical Chemistry, Palladium
Abstract

A new and efficient [(PhCH2O)2P(CH3)2CHNCH(CH3)2]2PdCl2/CuI-co-catalyzed coupling-cyclization reactions of 2-iodophenol with terminal alkynes is described. Different 2-substitued benzo[b]furan derivatives are obtained in good to excellent yields. This protocol employs a relatively low palladium(II) catalyst loading in water under air conditions.

Published
2018

5. The Homocoupling Reaction of Aromatic Terminal Alkynes by a Highly Active Palladium(II)/AgNO3 Cocatalyst in Aqueous Media Under Aerobic Conditions

Author

Shen Xiuli, Mengping Guo, Yongju Wen, Xiuling Zhou, Bo Chen, and Meiyun Lv

Subjects
aromatic terminal alkynes, Pharmaceutical Science, chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, Catalysis, Analytical Chemistry, lcsh:QD241-441, lcsh:Organic chemistry, Drug Discovery, Polymer chemistry, Organic chemistry, Physical and Theoretical Chemistry, Molecular Structure, Aqueous medium, 010405 organic chemistry, Communication, Organic Chemistry, Water, palladium(II)/AgNO3 cocatalyzing, 0104 chemical sciences, chemistry, Terminal (electronics), Chemistry (miscellaneous), homocoupling reaction, Alkynes, Silver Nitrate, Molecular Medicine, Palladium
Abstract

A new and efficient Pd(II)/AgNO3-cocatalyzed homocoupling of aromatic terminal alkynes is described. Various symmetrical 1,4-disubstituted-1,3-diynes are obtained in good to excellent yields. This protocol employs a loading with relatively low palladium(II) in aqueous media under aerobic conditions.

Published
2016

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