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Your search keyword '"Shen, Xiuli"' showing total 4 results
Start Over Author "Shen, Xiuli" Topic alkynes
4 results on '"Shen, Xiuli"'

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

Author

Guo M, Chen B, Lv M, Zhou X, Wen Y, and Shen X

Subjects
Alkynes chemistry, Catalysis, Molecular Structure, Water, Alkynes chemical synthesis, Palladium chemistry, Silver Nitrate chemistry
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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2. 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

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

Author

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

Subjects
CHELATES, PALLADIUM compounds, COUPLING reactions (Chemistry), AROMATIC compounds, ALKYNES, AQUEOUS solutions
Abstract

A new and efficient protocol for the P, O chelate Pd(II)/AgNO3cocatalyzed 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 NEt3and THF/H2O (in 4:1 proportion) played crucial roles in the reaction. In contrast, this protocol employs a low palladium(II) complex loading and AgNO3as cocatalyst to obtain the homocoupled products in moderate to good yields. [ABSTRACT FROM PUBLISHER]

Published
2017
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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

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

Subjects
CHEMICALS, RING formation (Chemistry), ALKYNES, CATALYSTS, PALLADIUM catalysts
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. [ABSTRACT FROM AUTHOR]

Published
2018
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