140459-96-7Relevant articles and documents
The Construction of Homochiral Lanthanide Quadruple-Stranded Helicates with Multiresponsive Sensing Properties toward Fluoride Anions
Chen, Wanmin,Tang, Xiaoliang,Dou, Wei,Wang, Bei,Guo, Lirong,Ju, Zhenghua,Liu, Weisheng
, p. 9804 - 9811 (2017)
A series of unique homochiral lanthanide tetranuclear quadruple-stranded helicates have been self-assembled controllably by using the intrinsic advantages of chiral bridging ligands, (S)-H2L and (R)-H2L, and lanthanide ions with high coordination numbers. The self-assembly process of these chiral helicates not only ensures the structural stability and quadruple-stranded feature of lanthanide cluster in the solid state and solution, but also achieves effective transfer and amplification of the chirality code from the ligand to a higher supramolecular level. Moreover, through using optical rotation, circular dichroism spectra analysis, and luminescence measurements, we demonstrate that these chiral lanthanide helicates could serve as sensitive and multi-responsive sensors to recognize and detect F? anions based on the change of chiral signal and NIR luminescence simultaneously, which represents a meaningful exploration for developing functional lanthanide-based polynuclear clusters.
Based on the chiral diamine spiro skeleton chiral phosphorus nitrile catalyst, preparation method and application thereof
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Paragraph 0153; 0154, (2017/08/16)
The invention provides a chiral phosphazene catalyst based on a spiro framework adopting chiral diamine, a preparation method and an application of the chiral phosphazene catalyst. The catalyst has a structure represented in the general formula: (RX-)3P=NR', chiral groups are introduced through R and R', and the catalyst has a structure with two seven-membered rings in centered connection through phosphorspirol. Optically pure tartaric acid or substituted hexahydrophthalic acid or 1,2-cyclopentanedicarboxylicacid,(1R,2S)-rel- is taken as a raw material, chiral diamine is generated through esterification, a Grignard reaction, an optional chlorination reaction, an azido reaction and a reduction reaction of the raw material, then chiral diamine and phosphorus pentachloride have a spirocyclization reaction to construct a phosphorspirol-centered screw ring, the chiral phosphazene molecular catalyst is obtained under the alkaline condition, and a method for substituting azido for hydroxyl directly has good application and popularization value. The catalyst has the advantages of high catalysis efficiency, good stereoselectivity, mild conditions, economy, environmental protection, simplicity and convenience in operation and the like as well as popularization and application prospects.
Chiral acylhydrazone compound and preparation method and application of rare earth complex
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Paragraph 0023, (2017/09/26)
The invention discloses a chiral acylhydrazone compound and a preparation method and an application of rare earth complex. The ligands of the complex contain acylhydrazone perssad with polydentate ligand characteristics and can be bond with rare earth ions to obtain a singular chirality, constitutionally stable quad-core quad-screw complex; the formation is by utilizing the NH on the ligands and the hydrogen bond of fluorion in the complexes, and thereby the selective identification and detection of optical rotation of fluorion by optical rotation signals of the chiral complexes are achieved.