57931-25-6Relevant articles and documents
Method for preparing acid through oxidating alcohols or aldehydes by oxygen
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Paragraph 0051; 0052; 0053; 0054; 0079; 0080; 0081, (2017/09/29)
The invention provides a method for preparing acid through oxidating alcohols or aldehydes by using oxygen or oxygen in air as an oxidant. The method comprises the steps: oxidating the alcohols or aldehydes to produce the acid at room temperature in an organic solvent in a manner of taking ferric nitrate (Fe(NO3)3.9H2O), 2,2,6,6-tetramethylpiperidyl nitrogen oxide (TEMPO) and an inorganic halide as catalysts and taking the oxygen or air as an oxidant, and oxidating diols to produce lactone; or, carrying out a reaction on the aldehydes, which serve as a raw material, under neutral conditions by taking ferric nitrate as a catalyst, and oxidating the aldehydes to produce the acid and peroxy acid. The method has the advantages that the method is environmentally friendly, the cost is low, the yield is high, the atomic economical efficiency is high, the compatibility of substrate functional groups is good, the reaction conditions are mild, a reaction scale can be enlarged, and the like, so that the method is suitable for being applied to industrial production.
Design and synthesis of new vancomycin derivatives
Gu, Wen,Chen, Bei,Ge, Min
, p. 2305 - 2308 (2014/05/20)
A set of vancomycin derivatives with lipid chain attached via a glyceric acid linker was designed and synthesized. A concise synthesis towards these derivatives was developed and the IC50s of these new lipoglycopeptides were tested. Some of them showed very potent activity against both vancomycin sensitive and resistant strains.
Influences on the Selectivity of the Kolbe versus the Non-Kolbe Electrolysis in the Anodic Decarboxylation of Carboxylic Acids
Klocke, Elisabeth,Matzeit, Agnes,Gockeln, Marianne,Schaefer, Hans J.
, p. 1623 - 1630 (2007/10/02)
The anodic decarboxylation of 3-oxanonanoic acid (2a) and 3-oxapentadecanoic acid (2b) in methanol leads exclusively to products of the non-Kolbe electrolysis.The influence of coelectrolysis, solvent, current density, degree of neutralization and chain length of the alkoxy group on the anodic decarboxylation of 2a, b have been investigated.An extended alkyl chain in the alkoxy group, coelectrolysis with long-chain fatty acids, ethanol or dimethylformamide as solvent, and a high current density favor the Kolbe coupling against the non-Kolbe electrolysis.Key Words: Kolbe electrolysis/ Non-Kolbe electrolysis/ Carboxylic acids, α-alkoxy-/ Solvent effects