24564-71-4Relevant academic research and scientific papers
Water-induced fluorescence quenching of mono- and dicyanoanilines
Oshima, Juro,Yoshihara, Toshitada,Tobita, Seiji
, p. 306 - 311 (2008/02/13)
Photophysical properties of monocyano- (2-, 3-, and 4-cyano) and dicyano- (3,4-, 3,5-, 2,3-, 2,4-, 2,5-, and 2,6-dicyano) anilines are investigated by fluorescence measurements. All the monocyanoanilines are virtually nonfluorescent in water (quantum yield 0.01); however, in nonaqueous solvents (cyclohexane, acetonitrile and ethanol), the fluorescence quantum yield is enhanced substantially. In contrast, dicyanoanilines investigated are highly fluorescent both in aqueous and nonaqueous environments. The photophysical data and MO calculations suggest that conformational changes in the amino group and variation of hydrogen-bonding interactions between the solute and solvent water upon electronic excitation are responsible for the water quenching in the monocyanoanilines.
HYDRAZIDES AND DERIVATIVES PRODUCTION PROCESS FROM HYDRAZINES AND DICARBOXYLIC ACIDS
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Page/Page column 7-8, (2008/06/13)
The present invention describes a process to form hydrazides from the reaction of a hydrazine and a dicarboxylic, using a Lewis acid as a main reagent of the reaction. The reaction occurs in a safe reactional environment, utilizing smooth conditions, neither involving high temperatures nor high pressures, producing the desired products with high yields, between 90-95%. The invention also describes a kit for utilization of chemiluminescent substances, comprised of two solutions.
Synthesis and oxidation reactions of a user- and eco-friendly hypervalent iodine reagent
Thottumkara, Arun P,Vinod, Thottumkara K
, p. 569 - 572 (2007/10/03)
Allylic and benzylic alcohols are cleanly oxidized to the corresponding carbonyl compounds in water or water-THF mixtures using a water-soluble derivative of o-iodoxybenzoic acid. A mechanism involving single electron transfer steps is proposed for this facile and eco-friendly oxidation protocol.
