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9 results on '"Quan-Ping Wu"'

2. Reaction ofN-Tosylated Imines with α,β-Acetylenic Ketones via Organozinc Species

Author

Yong-Kang Liu, Song Xue, Quan-Ping Wu, and Qing-Xiang Guo

Subjects
Chemistry, Organic Chemistry, Organic chemistry, Stereoselectivity, Reaction system, Catalysis, Adduct
Abstract

A new procedure for stereoselective synthesis of trisubstituted alkenes by an one-pot, three-component reaction of N-tosylated imines with α,β-acetylenic ketones and organozinc species CF3COOZnEt was described. This reaction system provides β-branched Morita–Baylis–Hillman adducts with excellent yields in absence of any catalyst.

Published
2010

3. Block Copolymerization of ε-Caprolactone and 2-Methoxyethyl Ethylene Phosphate Initiated by Aluminum Isopropoxide: Synthesis, Characterization, and Kinetics

Author

Quan-Ping Wu, Nan Ma, Dong-Ping Chen, Sheng-Yi Shen, Yucai Wang, Jun Wang, and Gustav Steinhoff

Subjects
Ethylene, Polymers and Plastics, Organic Chemistry, technology, industry, and agriculture, Solution polymerization, macromolecular substances, musculoskeletal system, Ring-opening polymerization, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Polymerization, Alkoxide, Polymer chemistry, Materials Chemistry, Copolymer, Caprolactone, Tetrahydrofuran
Abstract

Novel biodegradable and biocompatible block copolymers of poly(e-caprolactone) (PCL) and polyphosphoester were prepared in tetrahydrofuran by a two-step sequential ring-opening polymerization of e-...

Published
2006

5. Et3N-Promoted reaction of acetylenic ketones with N-(diphenylmethylene)glycinates: an efficient synthesis of α,β-dehydroamino acid derivatives

Author

Song Xue, Qingfa Zhou, and Quan-Ping Wu

Subjects
chemistry.chemical_classification, Ketone, chemistry, Organic Chemistry, Drug Discovery, Biochemistry, Medicinal chemistry
Abstract

An efficient procedure for preparation of α,β-dehydroamino acids from the reaction of acetylenic ketones with N -(diphenylmethylene)glycinates 2 is described. The reaction of terminal acetylenic ketones with 2 promoted by Et 3 N at −10 °C gave the dehydroamino acids containing ketone group in good yields.

Published
2008

6. ChemInform Abstract: Reaction of N-Tosylated Imines with α,β-Acetylenic Ketones via Organozinc Species

Author

Quan-Ping Wu, Qing-Xiang Guo, Yong-Kang Liu, and Song Xue

Subjects
Chemistry, Stereoselectivity, General Medicine, Medicinal chemistry
Abstract

An efficient method for the stereoselective synthesis of functionalized trisubstituted olefins (V) (22 examples) via one-pot three-component reaction of imines (III) with α,β-acetylenic ketones (IV) and organo-zinc species (II) is developed.

Published
2010

7. ChemInform Abstract: Et3N-Promoted Reaction of Acetylenic Ketones with N-(Diphenylmethylene)glycinates: An Efficient Synthesis of α,β-Dehydroamino Acid Derivatives

Author

Qingfa Zhou, Quan-Ping Wu, and Song Xue

Subjects
chemistry.chemical_classification, Ketone, chemistry, Stereochemistry, General Medicine
Abstract

An efficient procedure for preparation of α,β-dehydroamino acids from the reaction of acetylenic ketones with N -(diphenylmethylene)glycinates 2 is described. The reaction of terminal acetylenic ketones with 2 promoted by Et 3 N at −10 °C gave the dehydroamino acids containing ketone group in good yields.

Published
2009

8. Influence of Triarylamine and Indoline as Donor on Photovoltaic Performance of Dye-Sensitized Solar Cells Employing Cobalt Redox Shuttle.

Author

Yue Zhang, Zhi-hui Wang, Yu-jie Hao, Quan-ping Wu, Mao Liang, and Song Xue

Abstract

Two organic dyes XS51 and XS52 derivated from triarylamine and indoline are synthesized for dye-sensitized solar cells (DSCs) employing cobalt and iodine redox shuttles. The effects of dye structure upon the photophysical, electro-chemical characteristics and cell performance are investigated. XS51 with four hexyloxyl groups on triarylamine performs better steric hindrance and an improvement of photovoltage. XS52 provides higher short-circuit photocurrent density due to the strong electron-donating capability of indoline unit. The results from the redox electrolyte on cell performances indicate that the synthesized dyes are more suitable for tris(1,10-phenanthroline)cobalt(II/III) redox couple than I-/I3-redox couple in assembling DSCs. Application of XS52 in the cobalt electrolyte yields a DSC with an overall power conversion efficiency of 6.58% under AM 1.5 (100 mW/cm2) irradiation. [ABSTRACT FROM AUTHOR]

Published
2015
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9. PPh3-catalyzed unexpected α-addition reaction of 1-(o-hydroxyaryl)-1,3-diketones to terminal alkynoates: a straightforward synthesis of multifunctional vinylestersElectronic supplementary information (ESI) available: Detailed experimental procedures and characterization data for all products, and X-ray data for 3a. CCDC 711329. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b909279j

Author

Ling-Guo Meng, Bin Hu, Quan-Ping Wu, Mao Liang, and Song Xue

Subjects
CATALYSTS, PHOSPHINE, ADDITION reactions, KETONES, ORGANIC synthesis, ESTERS, CHEMICAL bonds
Abstract

PPh3-catalyzed α-addition reactions of 1-(o-hydroxyaryl)-1,3-diketones to terminal alkynoates involving carbon–carbon bond cleavage to give multifunctional vinylesters are described. [ABSTRACT FROM AUTHOR]

Published
2009
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