Zobrazeno 1 - 10 of 46 pro vyhledávání: '"Qing-qing Cheng"'
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Akademický článek
A Biomimetic Chitosan Derivates: Preparation, Characterization and Transdermal Enhancement Studies of N-Arginine Chitosan
Autor: Xu-Hui Huang, Wei Wang, Wei Huo, Qing-Qing Cheng, Lu-Lu Hou, Jian-Ping Zhou, Qiang Zhang, Xiao-Pan Wang, Zhen-Hai Zhang, Hui-Xia Lv
Publikováno v: Molecules, Vol 16, Iss 8, Pp 6778-6790 (2011)
A novel arginine-rich chitosan (CS) derivates mimicked cell penetration peptides; N-Arginine chitosan (N-Arg-CS) was prepared by two reaction methods involving activated L-arginine and the amine group on the chitosan. FTIR spectra showed that arginin
Externí odkaz: https://doaj.org/article/e858580172c44e9891c6f6713f320772
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2
Vicinal Co atom-coordinated Fe–N–C catalysts to boost the oxygen reduction reaction
Autor: Yu-bin Chen, Jie-jie Li, Yan-ping Zhu, Jian Zou, Hao Zhao, Chi Chen, Qing-qing Cheng, Bo Yang, Liang-liang Zou, Zhi-qing Zou, Hui Yang
Publikováno v: Journal of Materials Chemistry A. 10:9886-9891
Vicinal Co atoms modulate the electronic structure of the Fe site and adsorption behaviour of the intermediates, boosting ORR performance.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0fd06713aaba8ce1f4e36ff7abeeb0d
https://doi.org/10.1039/d2ta00884j
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3
Phosphorus(V) Fluoride Exchange (PFEx): Multidimensional Click Chemistry from Phosphorus(V) Connective Hubs
Autor: Shoujun Sun, Christopher J. Smedley, Joshua A. Homer, Qing-Qing Cheng, K. Barry Sharpless, John E. Moses
We report catalytic Phosphorus Fluoride Exchange (PFEx) as the latest advance in connective click-reaction technology. Emulating Nature, PFEx reaches into the biological world and creates stable tetrahedral P(V)- connections through efficient phospho
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::095aef47e4657f6a93573fffec54f6e5
https://doi.org/10.26434/chemrxiv-2022-nc91f
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4
Organocatalytic nitrogen transfer to unactivated olefins via transient oxaziridines
Autor: Daniel H. Ess, Qing Qing Cheng, Heming Jiang, Xinhao Zhang, László Kürti, Zhe Zhou, Juha H. Siitonen
Publikováno v: Nature Catalysis. 3:386-392
Organocatalytic nitrogen transfer to C=C bonds provides straightforward access to aziridines under mild conditions with low financial and environmental impacts; however, previous methods were typically limited to conjugated C=C bonds (that is, activa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fef1b8fe5a71cd9b36289e76ab7ba82f
https://doi.org/10.1038/s41929-020-0430-4
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5
Highly Efficient Fe–N–C Electrocatalyst for Oxygen Reduction Derived from Core–Shell-Structured Fe(OH)3@Zeolitic Imidazolate Framework
Autor: Jia-Wei Huang, Hai-Bin Zhu, Hui Yang, Yi-Chen Huang, Qing-Qing Cheng, Hong-Chang Yao
Publikováno v: ACS Applied Energy Materials. 2:3194-3203
Fe–N–C electrocatalysts represent one of the most promising oxygen reduction catalysts to replace the expensive platinum (Pt)-based catalysts in fuel cells. Herein, we report a highly efficient zeolitic imidazolate framework (ZIF)-derived Fe–N
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93656263f08d912eb885ef7aac4a6e0b
https://doi.org/10.1021/acsaem.9b00023
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6
Copper‐Catalyzed Formal [4+2] Cycloaddition of Enoldiazoimides with Sulfur Ylides
Autor: Hadi D. Arman, Brook S. Willett, Qing Qing Cheng, Michael P. Doyle, Lynée A. Massey, Yongming Deng
Publikováno v: Angewandte Chemie International Edition. 57:10343-10346
Enoldiazoimides, a new subclass of enoldiazo compounds, generate enol-substituted carbonyl ylides whose reactions with sulfur ylides enable an unprecedented formal [4+2] cycloaddition. The resulting multifunctionalized indolizidinones, which incorpor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d41d8856fcf31ac600bb858b9251835
https://doi.org/10.1002/anie.201805323
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9
Divergent Rhodium-Catalyzed Cyclization Reactions of Enoldiazoacetamides with Nitrosoarenes
Autor: Qing Qing Cheng, Daniel J. Wherritt, Marianne Lankelma, Michael P. Doyle, Hadi D. Arman
Publikováno v: Journal of the American Chemical Society. 139:9839-9842
The first cyclization reactions of enoldiazo compounds with nitrosoarenes have been developed. Under the catalysis of rhodium(II) octanoate, [3 + 2]-cyclization between enoldiazoacetamides and nitrosoarenes occurred through cleavages of the enol doub
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e15be4efb8b5c9698ad15dd1803d1678
https://doi.org/10.1021/jacs.7b05840
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10
Asymmetric [3+3] Cycloaddition for Heterocycle Synthesis
Autor: Yongming Deng, Michael P. Doyle, Qing Qing Cheng
Publikováno v: Synlett. 28:1695-1706
Asymmetric syntheses of six-membered ring heterocycles are important research targets not only in synthetic organic chemistry but also in pharmaceuticals. The [3+3]-cycloaddition methodology is a complementary strategy to [4+2] cycloaddition for the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1455d1d25a424ab99f75cb2e7eb6ad33
https://doi.org/10.1055/s-0036-1588453
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