Recyclable copper-catalyzed ambient aerobic oxidation of primary alcohols to aldehydes in water using water-soluble PEG-functionalized pyridine triazole as ligand

2017 ◽  
Vol 101 ◽  
pp. 5-9 ◽  
Author(s):  
Nan Sun ◽  
Xiaonan Zhang ◽  
Liqun Jin ◽  
Baoxiang Hu ◽  
Zhenlu Shen ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Water Soluble ◽  
Primary Alcohols ◽  
Functionalized Pyridine

Aerobic oxidation of primary alcohols in the presence of activated secondary alcohols

2005 ◽  
Vol 46 (5) ◽  
pp. 783-786 ◽  
Author(s):  
Hiromichi Egami ◽  
Hideki Shimizu ◽  
Tsutomu Katsuki
Keyword(s):  
Aerobic Oxidation ◽  
Secondary Alcohols ◽  
Primary Alcohols

scholarly journals THE LIMITING MECHANISM IN TARSAL CHEMORECEPTION

1951 ◽  
Vol 35 (1) ◽  
pp. 55-65 ◽  
Author(s):  
V. G. Dethier
Keyword(s):  
Partition Coefficients ◽  
Physiological Effect ◽  
Threshold Concentration ◽  
Water Soluble ◽  
Phormia Regina ◽  
Phase System ◽  
Primary Alcohols ◽  
Two Phase ◽  
The Relationship ◽  
Gain Access

Rejection thresholds of eight primary alcohols applied to the tarsal chemoreceptors of the blowfly Phormia regina Meigen and the ovipositor of Gryllus assimilis Fab. have been determined. Three different solvents for the alcohols have been used: water, ethylene glycol, and mineral oil. The comparative stimulating effectiveness of the alcohols assumes a different aspect with each different solvent. In oil the range of thresholds from methanol to octanol extends over less than one log unit as compared with the corresponding thresholds in water which extend over four log units. In glycol the thresholds extend over two and one half log units only. When water is employed as a solvent, the line which describes the relationship between threshold concentration and chain length of the compound exhibits a sharp break at or near butanol. No such discontinuity is evident when glycol or oil is employed as solvent. This is offered as evidence supporting the hypothesis that the limiting mechanism in tarsal chemoreception involves a two phase system whereby highly water-soluble compounds gain access to the receptor through an aqueous phase and the larger lipoid-soluble molecules chiefly through a lipoid phase. Additional facts which support this idea are gained from data which show that the inflection in the curve occurs at different points with different species of insects and is conspicuously absent in the case of man. When thresholds in aqueous solutions are converted from molar concentrations to activities, it is clear that the relation of equal physiological effect at equal thermodynamic activities does not apply here. The lower members of the series stimulate at progressively increasing activities up to pentanol and then at progressively decreasing activities. Furthermore, the ratio of water threshold to oil threshold exhibits no obvious agreement with the water/oil partition coefficients determined experimentally. These results indicate either that the limiting process of chemoreception in these insects does not depend upon the establishment of an equilibrium or that some kinetic effect is obscuring an underlying relationship which does so depend.

Transition-metal-free aerobic oxidation of primary alcohols to carboxylic acids

2013 ◽  
Vol 37 (6) ◽  
pp. 1700 ◽  
Author(s):  
Jing Wang ◽  
Chao Liu ◽  
Jiwen Yuan ◽  
Aiwen Lei
Keyword(s):  
Transition Metal ◽  
Carboxylic Acids ◽  
Aerobic Oxidation ◽  
Primary Alcohols ◽  
Metal Free

Efficient, Copper-Catalyzed, Aerobic Oxidation of Primary Alcohols.

ChemInform ◽  
2004 ◽  
Vol 35 (28) ◽  
Author(s):  
Istvan E. Marko ◽  
Arnaud Gautier ◽  
Raphael Dumeunier ◽  
Kanae Doda ◽  
Freddi Phillippart ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Primary Alcohols

ChemInform Abstract: Cu-NHC-TEMPO Catalyzed Aerobic Oxidation of Primary Alcohols to Aldehydes.

ChemInform ◽  
2014 ◽  
Vol 45 (5) ◽  
pp. no-no
Author(s):  
Xiaolong Liu ◽  
Qinqin Xia ◽  
Yuejiao Zhang ◽  
Congyan Chen ◽  
Wanzhi Chen
Keyword(s):  
Aerobic Oxidation ◽  
Primary Alcohols

Selective Aerobic Oxidation of Primary Alcohols to Aldehydes

Synlett ◽  
2017 ◽  
Vol 28 (13) ◽  
pp. 1554-1557 ◽  
Author(s):  
Masatoshi Shibuya ◽  
Keisuke Furukawa ◽  
Yoshihiko Yamamoto
Keyword(s):  
Carboxylic Acid ◽  
Selective Oxidation ◽  
Aerobic Oxidation ◽  
Primary Alcohols ◽  
Co Catalyst ◽  
Tert Butyl ◽  
Selective Aerobic Oxidation

The 2-azaadamantane-N-oxyl (AZADO)- and 9-azanoradamantane-N-oxyl (nor-AZADO)-catalyzed selective oxidation of primary alcohols to the corresponding aldehydes is described. The use of tert-butyl nitrite as the co-catalyst enables efficient aerobic oxidation in MeCN instead of previously reported AcOH; this is important for the selectivity of the reaction. The addition of a solution of saturated aqueous NaHCO3 after the completion of the reaction was effective to suppress the overoxidation of the product to the corresponding carboxylic acid during the workup.

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