Mutagenicity of 1,2-dicarbonyl compounds: maltol, kojic acid, diacetyl and related substances . Mutat. Res . 67 , 367 – 371 .L.F. Bjeldanes and H. Chew, Mutagenicity of 1, 2-dicarbonyl compounds: Maltol, kojic acid, diacetyl and related substances, Mutation Res . 67: 367 (1979)....
If necessary, stock solutions were diluted with water prior to protein precipitation, after which the mixtures were centrifuged at 10,000 rpm for 15 min, and the supernatant was directly used for 1,2-dicarbonyl compound analysis after additional membrane ?ltration (0.45 lm, hydrophilic ...
There are several variants and the most simple is a one-pot condensation of three components: a 1,2-dicarbonyl compound, an ester with a reactive α-methylene group and a hydrazine, at the most monosubstituted. However, the preferred synthetic approach is first to prepare the monohy...
The 1,2-dicarbonyl motif is vital to biomolecules, especially natural products and pharmaceuticals. Conventionally, 1,2-dicarbonyl compounds are prepared via an α-keto acyl chloride. Based on the methods used in nature, a transition-metal-free approach
摘要：1,3-Dicarbonyl compounds useful as medicines, agricultural chemicals, perfumes, and their intermediates are prepared by reacting a specific . alpha.,&bgr;-unsaturated carbonyl compound with a specific organic copper lithium compound in the presence of an aprotic inert organic solvent, and then ...
1,3-dicarbonyl compound1,3-二羰基化合物 1.A new method for the halogenation of 1,3-dicarbonyl compounds;1,3-二羰基化合物的卤代反应的一种新方法 2.Silica supported sodium hydrogen sulfate (NaHSO4?SiO2) has been found to be an efficient het- erogeneous catalyst for the condensation of 1,...
2) 1,3-dicarbonyl compound 1,3-二羰基化合物 1. A new method for the halogenation of 1,3-dicarbonyl compounds; 1,3-二羰基化合物的卤代反应的一种新方法 2. Silica supported sodium hydrogen sulfate (NaHSO4?SiO2) has been found to be an efficient het- erogeneous catalyst for the ...
来自 ResearchGate 喜欢 0 阅读量: 21 作者: W Wojtczak 摘要: 6,660,700 Formulations including a 1,3-dicarbonyl compound chelating agent and copper corrosion inhibiting agents for stripping residues from semiconductor substrates containing copper structures - ResearchGate 被引量: 12 年份: 2002 ...
This is a process that, to the best of our knowledge, has no precedent in the literature and converts simple alkenes directly to 1,4-dicarbonyls37,38,39,40. Fig. 3: Stereodivergence of the 1,3-difunctionalization of alkenes and extension to other product classes. a, Selected example of...
The ability of histidine to scavenge sugar-derived 1,2-dicarbonyl compounds was investigated using aqueous methanolic model systems containing histidine or histamine in the presence of glucose, methylglyoxal, or glyoxal. The samples were prepared either at room temperature (RT) or at 150 °C and an...