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Your search keyword '"Yan, Liang-Liang"' showing total 2 results
Start Over Author "Yan, Liang-Liang" Publisher royal society of chemistry
2 results on '"Yan, Liang-Liang"'

1. Stereocontrolled self-assembly and photochromic transformation of lanthanide supramolecular helicates.

Author

Cai, Li-Xuan, Yan, Liang-Liang, Li, Shao-Chuan, Zhou, Li-Peng, and Sun, Qing-Fu

Subjects
*RARE earth metals, *PHOTOCHROMISM, *MOLECULAR self-assembly
Abstract

Stereocontrolled self-assembly of a dinuclear triple-stranded europium helicate (Eu2L3) based on DTE-functionalized ligands has been achieved via the chiral-induction strategy. The point-chirality of the ligands is transferred to give either Δ or Λ metal-centers and hence leads to the overall P or M helical senses. CD spectroscopy and NMR enantiomeric differentiation experiments have confirmed the formation of enantiomers. Moreover, the helicates in solution feature reversible photocyclization and cycloreversion, offering an opportunity to develop as chiroptical switches. [ABSTRACT FROM AUTHOR]

Published
2018
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2. Boiling water-catalyzed neutral and selective N-Boc deprotectionElectronic supplementary information (ESI) available: Experimental details and analytical data. See DOI: 10.1039/b910239f.

Author

Jia Wang, Yan-Liang Liang, and Jin Qu

Subjects
*CATALYSTS, *NITROGEN compounds, *FUNCTIONAL groups, *REACTION mechanisms (Chemistry), *ACID-base chemistry, *CHEMISTRY experiments, *WATER boiling
Abstract

A general protocol for removing Boc groups from various types of nitrogen is reported and a preliminary investigation of the reaction mechanism indicates that water acts as a dual acid/base catalyst at elevated temperature. [ABSTRACT FROM AUTHOR]

Published
2009
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