24564-71-4Relevant articles and documents
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.
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.
