MILD AND CONVENIENT EPOXIDATION OF α,β-UNSATURATED KETONES BY AMBERLYST A-26 SUPPORTED HYDROPEROXIDE
作者:M. M. Lakouraj、B. Movassagh、K. Bahrami
DOI:10.1081/scc-100104010
日期:2001.1.1
The epoxidation of α,β-unsaturatedketones to the corresponding epoxy ketones, using amberlyst A-26 supported hydroperoxide, which is prepared in situ from (35%) hydrogen peroxide and amberlyst A-26(OH−), is described. Reactions were carried out at room temperature and the corresponding epoxides were isolated in excellent yields.
Gao, Feng; Johnson, Kurtis F.; Schlenoff, Joseph B., Journal of the Chemical Society. Perkin transactions II, 1996, # 2, p. 269 - 274
作者:Gao, Feng、Johnson, Kurtis F.、Schlenoff, Joseph B.
DOI:——
日期:——
The chemistry of 2'-amino analogs of 2'-hydroxychalcone and its derivatives
作者:John A. Donnelly、David F. Farrell
DOI:10.1021/jo00293a017
日期:1990.3
Synthesis and fluorescence properties of 2-aryl-3-hydroxyquinolones, a new class of dyes displaying dual fluorescence
作者:Dmytro A. Yushchenko、Mykhailo D. Bilokin’、Oleksandr V. Pyvovarenko、Guy Duportail、Yves Mély、Vasyl G. Pivovarenko
DOI:10.1016/j.tetlet.2005.11.160
日期:2006.2
A series of 2-aryl-3-hydroxyquinolones (3HQs) with different electron donating aryl substituents at the position 2 were synthesized. Their absorption and fluorescence properties were studied in solvents of medium and high polarity. Almost all the synthesized 3HQs display dual fluorescence in the tested solvents, in line with an excited state intramolecular proton transfer reaction. For N-methyl substituted compounds, the intensity ratio of the two emission bands was found to be exquisitely sensitive to solvent polarity, with a two orders of magnitude change from toluene to dimethylsulfoxide. Consequently, these compounds appear as prospective polarity fluorescent labels for proteins and nucleic acids. (c) 2005 Elsevier Ltd. All rights reserved.