52667-89-7Relevant articles and documents
Reusable and environmentally friendly ionic trinuclear iron complex catalyst for atom transfer radical polymerization
Niibayashi, Shota,Hayakawa, Hitoshi,Jin, Ren-Hua,Nagashima, Hideo
, p. 1855 - 1857 (2007)
Ionic iron complex [(Me3tacn)2Fe2Cl 3]+[(Me3tacn)FeCl3]- (1), which is readily soluble in methanol, acted as a powerful catalyst in controlled radical polymerization of styrene and MMA, and showed promising features of removal from the resulting polymers and was reusable after recovery from the crude products. The Royal Society of Chemistry.
Paramagnetic palladacycles with PdIII centers are highly active catalysts for asymmetric aza-Claisen rearrangements
Eitel, Simon H.,Bauer, Matthias,Schweinfurth, David,Deibel, Naina,Sarkar, Biprajit,Kelm, Harald,Krueger, Hans-Joerg,Frey, Wolfgang,Peters, Rene
, p. 4683 - 4693 (2012)
A combination of spectroscopic and electrochemical methods - XANES, EXAFS, X-ray, 1H NMR, EPR, Moessbauer, and cyclic voltammetry - demonstrate that the most efficient Pd catalysts for the asymmetric rearrangement of allylic trifluoroacetimidates unexpectedly possess in the activated oxidized form a PdIII center bound to a ferrocene core which remains unchanged (FeII) during the oxidative activation. These are the first recognized PdIII complexes acting as enantioselective catalysts.
Second-Sphere Interaction Promoted Turn-On Fluorescence for Selective Sensing of Organic Amines in a TbIII-based Macrocyclic Framework
Huang, Xianqiang,Liu, Qingzhi,Liu, Shixi,Ma, Shengqian,Nafady, Ayman,Niu, Zheng,Ren, Junyu,Tsai, Chen-Yen,Ye, Yingxiang
, p. 23705 - 23712 (2021/09/22)
Guided by a second-sphere interaction strategy, we fabricated a Tb(III)-based metal—organic framework (MMCF-4) for turn-on sensing of methyl amine with ultra-low detection limit and high turn-on efficiency. MMCF-4 features lanthanide nodes shielded in a nonacoordinate geometry along with secondary coordination spheres that are densely populated with H-bond interacting sites. Nonradiative routes were inhibited by binding-induced rigidification of the ligand on the second coordination sphere, resulting in luminescence amplification. Such remote interacting mechanism involved in the turn-on sensing event was confirmed by single-crystal X-ray diffraction and molecular dynamic simulation studies. The design of both primary and secondary coordination spheres of Tb(III) enabled the first turn-on sensing of organic amines in aqueous conditions. Our work suggests a promising strategy for high-performance turn-on sensing for Ln-MOFs and luminous materials driven by other metal chromophores.
METHOD FOR PREPARING NOTA DERIVATIVE
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, (2019/08/14)
The present invention discloses Method for preparing NOTA derivative. Firstly, take 4-methylsulfonyl chloride and diethylenetriamine in tosyl group reaction to obtain the first product. And, take the first product and sodium methoxide in the first substitution reaction to obtain the second product. Further, take 4-methylsulfonyl chloride and ethylene glycol in tosyl group reaction to obtain a third product. The second product is coupled to the third product to obtain a fourth product. Take the fourth product and sulfuric acid in the second substitution reaction. Finally, a final product is obtained by a bonding reaction with hydrochloric acid. The preparation method improves the water absorption issue of the benzene ring structure compound (TACN) of the NOTA derivative.