142340-15-6Relevant articles and documents
A ratiometric fluorescent probe for oxalate based on alkyne-conjugated carboxamidoquinolines in aqueous solution and imaging in living cells
He, Chunsheng,Qian, Xuhong,Xu, Yufang,Yang, Chunmei,Yin, Liyan,Zhu, Weiping
, p. 1034 - 1037 (2011)
A novel ratiometric fluorescent probe for oxalic acid was designed and synthesized, based on the zinc-containing [DAQZ@2Zn2+] complex. It shows highly selective "on-off" fluorescence changes with a more than 20 nm blue shift in wavelength for oxalic acids in aqueous solution. Moreover, it can fluorescently respond to oxalic acid in living cells.
Halogen Bond-Assisted Electron-Catalyzed Atom Economic Iodination of Heteroarenes at Room Temperature
Kazi, Imran,Guha, Somraj,Sekar, Govindasamy
, p. 6642 - 6654 (2019/06/14)
A halogen bond-assisted electron-catalyzed iodination of heteroarenes has been developed for the first time under atom economic condition at room temperature. The iodination is successful with just 0.55 equiv of iodine and 0.50 equiv of peroxide. The kinetic study indicates that the reaction is elusive in the absence of a halogen bond between the substrate and iodine. The formation of a halogen bond, its importance in lowering the activation barrier for this reaction, the presence of radical intermediates in a reaction mixture, and the regioselectivity of the reaction have been demonstrated with several control experiments, spectroscopic analysis, and quantum chemical calculations. Allowing the formation of the halogen bond may offer a new strategy to generate the reactive radical intermediates and to enable the otherwise elusive electron-catalyzed reactions under mild reaction conditions.
Luminescent chiral organoboron 8-aminoquinolate-coordination polymers
Tokoro, Yuichiro,Nagai, Atsushi,Chujo, Yoshiki
experimental part, p. 563 - 568 (2010/11/16)
We have successfully synthesized optically active organoboron aminoquinolate-based coordination polymers bearing the chiral side chain derived from L-alanine, and studied their optical behavior by UV-vis and photoluminescence spectroscopies. Higher absolute quantum yields (φF) of the obtained polymers, measured by integrating sphere method, were observed with electron-withdrawing substituent (φF = 0.80) than with electron-donating substituent (φF = 0.52). The circular dichroism (CD) study in the mixed solvents of CHCl3 and DMF showed that the secondary structures of the obtained polymers were stabilized by hydrogen-bonding interaction in the side chain. From concentration dependence on the CD spectra, the chirality of the obtained polymers originated from the nature of one molecule. Copyright
