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165 results on '"SHI Qing"'

1. ChemInform Abstract: Three New C19-Diterpenoid Alkaloids from Aconitum forrestii

Author

Hong-Lian Ai, Xu Junju, Sheng-Chao Yang, Yong Shen, Li-Mei Zhang, Da-Ke Zhao, Shu-Hui Zi, and Shi-Qing Xie

Subjects
Traditional medicine, Chemistry, Alkaloid, Aconitum forrestii, General Medicine, Terpenoid
Abstract

A further study of the alkaloid constituents of Aconitum forrestii led to the isolation of three new C19-diterpenoid alkaloids, named 14-acetoxy-8-O-methylsachaconitine (1), 14-acetoxyscaconine (2), and 8-O-ethylcammaconine (3). Their structures were determined by UV, IR, and MS, 1D- and 2D-NMR analyses.

Published
2014
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3. ChemInform Abstract: Luminescent Properties of Orange-Emitting Long-Lasting Phosphorescence Phosphor Ca2SnO4:Sm3+

Author

Wenjie Mai, Haoran Zhang, Yingliang Liu, Shi-qing Man, Song Yue, and Bingfu Lei

Subjects
Long lasting, Photoluminescence, Chemistry, Inorganic chemistry, Phosphor, General Medicine, Orange (colour), Luminescence, Phosphorescence, Spectroscopy, Stoichiometry
Abstract

The new orange-emitting title phosphor is synthesized by solid state reaction of stoichiometric mixtures of CaCO3, SnO2, and Sm2O3 (air, alumina crucible, 1400 °C, 4 h) and characterized by powder XRD and photoluminescence spectroscopy.

Published
2011
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4. ChemInform Abstract: Preparation and Luminescence Properties of Green-Light-Emitting Afterglow Phosphor Ca8Mg(SiO4)4Cl2:Eu2+

Author

Lei Sha, Yingliang Liu, Bingfu Lei, Shi-qing Man, Song Yue, and Haoran Zhang

Subjects
Alkaline earth metal, Chemistry, Solid-state, Analytical chemistry, Flux, Phosphor, General Medicine, Green-light, Luminescence, Afterglow
Abstract

The title phosphor is synthesized by solid state reaction of Ca2SiO4:Eu2+ (obtained from CaCO3, SiO2, and Eu2O3 in alumina crucibles in a reducing 95%/5% N2/H2 gas flow at 1200 °C for 3 h), MgCl2, and NH4Cl as a flux (N2, 900 °C, 3 h).

Published
2011
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9. Synthesis of 2-Aminothiophenes on Ionic Liquid Phase Support Using the Gewald Reaction

Author

Pingkai Ouyang, Ping Wei, Shi‐Qing Han, Yi Hu, and He Huang

Subjects
chemistry.chemical_compound, chemistry, Phase (matter), Organic Chemistry, Inorganic chemistry, Ionic liquid, Organic chemistry, General Medicine, Gewald reaction, Combinatorial chemistry, Thiophene derivatives
Abstract

The first report of the use of task‐specific ionic liquid as soluble support for the Gewald synthesis of 2‐aminothiophenes is reported in this article. This synthetic method is simple and efficient, and the products are obtained in good to excellent yields with high purities, without the need for chromatographic purification.

Published
2006
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