Unusual C<sub>3</sub>-acetylation of quinoxalin-2(1<i>H</i>)-one <i>via</i> oxidative C–C and C–O bond cleavages of PEG-400
作者:Vishal Suresh Kudale、Mohana Reddy Mutra、Ching-Piao Chu、Jeh-Jeng Wang
DOI:10.1039/d1ob00769f
日期:——
Aerobic oxidative tandem conversion of PEG-400 to acetyl radical via C–C and C–O bond cleavages followed by silver-catalyzed menisci-type addition to the C3 position of quinoxalin-2(1H)-one is described. This reaction involves the in situ formation of the acetyl radical from PEG-400 via a sequence of acetaldehyde, 2-oxopropanal and, 2-oxopropanoic acid formation and successive oxidative cleavage to
Photocatalytic Hydroacylation of Alkenes by Directly Using Acyl Oximes
作者:Lan Zheng、Peng-Ju Xia、Qing-Lan Zhao、Yu-En Qian、Wen-Nian Jiang、Hao-Yue Xiang、Hua Yang
DOI:10.1021/acs.joc.0c01818
日期:2020.9.18
are directly used as the acyl radical precursors in the hydroacylation reactions for the first time. In this work, acyl radicals can be effectively generated viaβ-scission of a phosphoranyl radical under photocatalytic conditions. As a result, the hydroacylation of alkenes triggered by the resulting acyl radicals leads to facile syntheses of a range of valuable ketones.
Quinoxaline-benzimidazole rearrangements in the reactions of 3-alkanoylquinoxalin-2-ones with 1,2-phenylenediamines
作者:A. A. Kalinin、O. G. Isaikina、V. A. Mamedov
DOI:10.1007/s10593-007-0198-3
日期:2007.10
Reaction of 3-Alkanoylquinoxalin-2-Ones with Ammonium Acetate in DMSO – A New Method for the Synthesis of Pyrroles
作者:A. A. Kalinin、V. A. Mamedov
DOI:10.1007/s10593-014-1461-z
日期:2014.5
The interaction of 3-alkanoylquinoxalin-2-ones with NH4OAc in DMSO at 105-120A degrees D produced pyrrole derivatives according to a novel [D-2+N+D-2] scheme, while the -(CO)-CH2- fragment of the substituent at position 3 of the quinoxalinones served as the source of two-carbon fragments D(2)-D(3) and D(4)-D(5), and the nitrogen source was NH4OAc.
Competition of imidazo-annulation and pyrrole-formation in the reactions of benzylamine with 3-acetylquinoxalin-2-ones