نتایج جستجو برای: alkyl alcohols
تعداد نتایج: 25341 فیلتر نتایج به سال:
The catalase-ethyl hydrogen peroxide compound studied by Stern (1) formed slowly, even in the presence of a very large concentration of ethyl hydrogen peroxide. In the previous paper (2), Stern’s compound has been shown to be preceded by a green primary compound. These kinetic studies show that the primary compound forms rapidly, has a high affinity* for its substrate, and quantitatively fulfil...
The catalase-ethyl hydrogen peroxide compound studied by Stern (1) formed slowly, even in the presence of a very large concentration of ethyl hydrogen peroxide. In the previous paper (2), Stern’s compound has been shown to be preceded by a green primary compound. These kinetic studies show that the primary compound forms rapidly, has a high affinity* for its substrate, and quantitatively fulfil...
The effect of adding primary n-alcohols with aliphatic chains and hexane on the nanostructure of a series of 14 protic ionic liquids (PILs) was explored using small and wide angle X-ray scattering (SAXS and WAXS). PILs were investigated with primary, secondary and tertiary ammonium cations containing different alkyl chain lengths, with and without hydroxyl substitution of the alkyl chain. Forma...
The Mn(III)-initiated aerobic oxidation of heterocyclic 1,3-dicarbonyl compounds, such as 4-alkyl-1,2-diphenylpyrazolidine-3,5-diones, 1,3-dialkylpyrrolidine-2,4-diones, 3-alkyl-1,5-dimethylbarbituric acids, and 3-butyl-4-hydroxy-2-quinolinone gave excellent to good yields of the corresponding hydroperoxides, which were gradually degraded by exposure to the metal initiator after the reaction to...
The synthesis of some novel alkyl/aryl substituted tertiary alcohols was accomplished in two steps. The synthetic route involves preparation of Grignard reagents by treating alkyl/aryl bromides with magnesium turnings in dry ether. Then substituted chalcones were reacted with the Grignard reagents to afford alkyl/aryl substituted tertiary alcohols 1-10. The structures of the synthesized compoun...
Labeled long chain acyl-CoA, aldehyde, and alcohol (16:0) were incubated in the peritoneal cavity of mice bearing Ehrlich ascites cells and the distribution of radioactivity in the acyl, alkyl, and alk-1-enyl moieties of various neutral lipid and phospholipid classes was compared. The results suggested the following metabolic relations. 1. Alkyl glyceryl ethers are precursors of alk-l-enyl glyc...
Labeled long chain acyl-CoA, aldehyde, and alcohol (16:0) were incubated in the peritoneal cavity of mice bearing Ehrlich ascites cells and the distribution of radioactivity in the acyl, alkyl, and alk-1-enyl moieties of various neutral lipid and phospholipid classes was compared. The results suggested the following metabolic relations. 1. Alkyl glyceryl ethers are precursors of alk-l-enyl glyc...
An efficient enantioselective synthesis of lactones was developed based on the catalytic asymmetric conjugate addition (ACA) of alkyl Grignard reagents to pyranones. The use of 2H-pyran-2-one for the first time in the ACA with Grignard reagents allows for a variety of further transformations to access highly versatile building blocks such as β-alkyl substituted aldehydes or β-bromo-γ-alkyl subs...
An efficient one-pot synthesis of optically active β-alkyl-substituted alcohols through a tandem coppercatalyzed asymmetric allylic alkylation (AAA) with organolithium reagents and reductive ozonolysis is presented. Furthermore, hydroboration−oxidation following the Cucatalyzed AAA leads to the corresponding homochiral γalkyl-substituted alcohols.
This report presents the systematic study on the solubilities of 1-alkyl-3-methylimidazolium hexafluorophosphate [e, or bmim][PF6], 1-alkyl-3-methylimidazolium methylsulfate [almim][CH3SO4], 1-hexyloxymethyl-3-methylimidazolium ionic liquids (ILs) [C6H13OCH2mim][BF4], or [C6H13OCH2mim][(CF3SO2)2N] in aliphatic hydrocarbons (heptane, octane), cyclohydrocarbons (cyclopentane, cyclohexane) and aro...
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