17451-22-8Relevant articles and documents
Synthesis, structure and luminescent sensor of zinc coordination polymers based on a new functionalized bipyridyl carboxylate ligand
Lv, Bei,Wang, Xiaofang,Hu, Huai-Ming,Zhao, Yi-Fan,Yang, Meng-Lin,Xue, Ganglin
, p. 771 - 778 (2016)
Three new zinc coordination polymers, [Zn(L)]n·2n(H2O) (1), [Zn2(L)(μ2-OH)2]n·1.5n(H2O) (2), [Zn3(L)2(glu)]n(3), [H2?L?=?4′-(4-carboxyphenyl)-6′-carboxycalte-2,2′-bipyridine, H2glu?=?glutaric acid] have been hydrothermally synthesized and characterized by elemental analysis, infrared spectra and single crystal X-ray diffraction. Compound 1 is a 2D structure with the hcb topological net. Compound 2 is a microporous 2D layer structure with [Zn4O4] eight-membered rings. Compound 3 exhibits a self-penetrating 3D framework structure, which shows a new interesting topological net with the point symbol of {123}. Luminescent studies indicated that compound 3 could be an efficient multifunctional luminescent material for high-sensitivity sensing metal cations and small organic molecules, especially for Fe3+and Cu2+, methanol and nitrobenzene.
Asymmetric 1,4-Addition of Arylboronic Acids to β,γ-Unsaturated α-Ketoesters using Heterogeneous Chiral Metal Nanoparticle Systems
Miyamura, Hiroyuki,Yasukawa, Tomohiro,Zhu, Zhiyuan,Kobayashi, Shū
supporting information, p. 353 - 359 (2019/12/15)
Asymmetric 1,4-addition reactions with β,γ-unsaturated α-ketoesters are valuable because the resulting chiral ketoester compounds can be converted into various useful species that are often used as chiral building blocks in drug and natural product synthesis. However, β,γ-unsaturated α-ketoesters have two reactive points in terms of nucleophilic additions, which will lead to the 1,4-adduct, the 1,2-adduct and to the combined 1,4- and 1,2-adduct. Therefore, controlling this chemoselectivity is an important factor for the development of these transformations. Here, we developed an asymmetric 1,4-addition of aryl boronic acids to β,γ-unsaturated α-ketoesters by using heterogeneous chiral rhodium nanoparticle systems with a chiral diene ligand bearing a secondary amide moiety. The newly developed polydimethylsilane-immobilized rhodium nanoparticle catalysts showed high activity, high chemoselectivity, and excellent enantioselectivity, and this is the first heterogeneous catalytic system for this asymmetric reaction. Metal nanoparticle catalysts were recovered and reused without loss of activity or leaching of metal. (Figure presented.).
Photoactivity hexahydroquinolinone and preparation method thereof
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Paragraph 0059; 0183; 0184; 0186, (2017/07/21)
The invention discloses photoactivity hexahydroquinolinone and a preparation method thereof. The photoactivity hexahydroquinolinone is a diastereoisomer consisting of a compound shown as a formula I and a compound shown as a formula II, wherein a diastere
