3568-33-0Relevant academic research and scientific papers
Singel-Oxygen Photolysis of Dihaloketones. A Facile and Efficient Approach to Vicinal Triketones and Their Monohydrates
Mahran, M. Refat,Abdou, Wafaa M.,Sidky, Mahmoud M.,Wamhoff, Heinrich
, p. 506 - 508 (2007/10/02)
The preparation of vic-triketones and/or their monohydrates by sensitized photooxidation (singlet oxygen) of gem-dihaloketones and/or vic-dihaloketones is described; some reaction mechanisms are discussed.
Ylides of Heterocycles, VIII. Reactions of Iodonium-Ylides with Acids
Pongratz, Erik,Kappe, Thomas
, p. 231 - 242 (2007/10/02)
The reaction of various organic and inorganic acids (HX) with iodonium ylides 2 leads to nucleophilic substitution of the iodobenzene substituent by the anion X(-) to yield the heterocycles 5.Some of them are hydrolyzed to the hydroxy compounds 3 or reduced to the starting compounds 1 under the reaction conditions.Reaction of the iodonium ylide 2b with monomethyl sulfate gives the salt 9, which with bases undergoes nucleophilic substitution to compounds 8 and 10-12, respectively, or is converted to 2b again. - Keywords: 3-Acetoxy-4-hydroxy-2-quinolones; 2-Oxoquinoline-4-olates; 3-Substituted 4-hydroxy-2-quinolones
Syntheses of 3-Hydroxy-tetrahydroquinoline-2,4-diones
Stadlbauer, Wolfgang,Kappe, Thomas
, p. 1196 - 1200 (2007/10/02)
Oxidation of 3-alkyl- and 3-arylsubstituted 4-hydroxy-2-quinolones (1) by irradiation with UV light, reaction with 3-chloro-peroxybenzoic acid or hydrogen peroxide in alkaline solution leads to 3-hydroxy-3-substituted quinoline-2,4-diones (2). - Key words
