Synthesis of Methylene-Bridged Bis-1,3-dicarbonyl Compounds under Aerobic Condition
نویسندگان
چکیده
منابع مشابه
Gold/copper-catalyzed activation of the aci-form of nitromethane in the synthesis of methylene-bridged bis-1,3-dicarbonyl compounds.
Activation of the aci-form of nitromethane using Lewis acids for the attack of carbon nucleophiles was studied. 1,3-Dicarbonyl compounds in the presence of catalytic amounts of AuCl(3) or Cu(OTf)(2) in nitromethane solvent could be converted into methylene-bridged bis-1,3-dicarbonyl compounds.
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولCuBr-catalyzed selective oxidation of N-azomethine: highly efficient synthesis of methine-bridged bis-indole compounds.
An efficient CuBr catalyzed cleavage of C-N bonds in the oxidative cross-dehydrogenative-coupling (CDC) of N-benzyl amines with indoles mediated by tert-butyl hydroperoxide (TBHP) was reported. A series of methine-bridged bis-indole derivatives were successfully synthesized under the optimized reaction conditions.
متن کاملReactivity of 2-methylene-1,3-dicarbonyl compounds. 1,3-dipolar cycloaddition reaction with ethyl diazoacetate.
The reaction of 2-methylene-1,3-dicarbonyl compounds (1) with ethyl diazoacetate gave 4,5-dihydro-1H-pyrazole derivatives (2), which were stable for several months at room temperature in good yields.
متن کاملSynthesis of Bridged Bithiazoles
Bridged bithiazoles (5,5'-ethylene-4,4'-bithiazoles) are synthesized as a good chelating agent.
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ژورنال
عنوان ژورنال: Chinese Journal of Organic Chemistry
سال: 2015
ISSN: 0253-2786
DOI: 10.6023/cjoc201412035