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13 results on '"Ding, Jiaoyang"'

11. One-Pot Synthesis of Oxacalixarene Derivatives with Tunable Cavity Size Using Miscellaneous Linkers.

Author

Zhu, Yanping, Yuan, Jingjing, Li, Yitao, Gao, Meng, Cao, Liping, Ding, Jiaoyang, and Wu, Anxin

Subjects
HYDROGEN bonding, CRYSTAL structure, CHLOROFORM, CALIXARENES, NUCLEOPHILES
Abstract

Five oxacalixarene derivatives with different linkers including fluorescent units, soft donor atoms, and hydrogen-bond acceptors have been prepared via one-pot approach. Crystal structure reveals that oxacalixarene adopts a classical 1,3-alternate conformation. In contrast, the oxacalixarene adopts a cavity-like conformation. The inner cavity size is up to 13.357 � and guest molecules, such as chloroform, are included in its solid state. [ABSTRACT FROM AUTHOR]

Published
2011
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12. Colorimetric Fluoride Sensor Based on a Bisthiourea Functionalized Molecular Clip.

Author

Cao, Liping, Ding, Jiaoyang, Wang, Jungang, Chen, Yan, Gao, Meng, Xue, Weijian, and Wu, Anxin

Subjects
*COLORIMETRIC analysis, *THERMOCHROMISM, *ANIONS, *ULTRAVIOLET detectors, *FLUORIDES
Abstract

A new class of bisthiourea-functionalized molecular clips were designed and synthesized for anion recognition. Clip 1 showed excellent affinity to the biologically relevant fluoride ion in a 1:1 ratio as shown by UV-vis, �H and �9F NMR studies. Moreover, the binding was accompanied with visually noticeable color changes, enabling the compound to act as a colorimetric fluoride sensor. [ABSTRACT FROM AUTHOR]

Published
2010
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13. Thioglycoluril as a Novel Organocatalyst: Rapid and Efficient α-Monobromination of 1,3-Dicarbonyl Compounds.

Author

Cao, Liping, Ding, Jiaoyang, Yin, Guodong, Gao, Meng, Li, Yitao, and Wu, Anxin

Subjects
*HYDROGEN bonding, *CRYSTAL chemical bonds, *HYDROPHILIC compounds, *RING formation (Chemistry), *CATALYSIS
Abstract

Thioglycoluril as a novel hydrogen-bonding organocatalyst, combined with NBS, in MeOH provided rapid and efficient α-monobromination of 1,3-dicarbonyl compounds in excellent yields at room temperature. A bifunctional catalytic mechanism was proposed from these results. [ABSTRACT FROM AUTHOR]

Published
2009
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