To avoid this side reaction, special reagent called K-reagent is used. Ketones form a major constituent of paints, lacquer, explosives etc. These ketones should be completely free from water. The water content has to be detected precisely before ketones are further used. This application note de...
Benzenesulphinic acid is formed as a byproduct, and can be easily distinguished because of its high mobility and yellow color on spraying with iron (III) chloride solution. The derivatives are colored and no specific detection reactions are needed....
which is used for various metabolic and enzymatic processes within the cells. On a priority basis, carbohydrates are always metabolized for the production of energy. This is then followed by the metabolization of fats and proteins. However, in some instances when the body starts generating ...
What is generated as a byproduct of glucose metabolism? What is the substrate and what are the products of glycogen phosphorylase? What is the waste product of glucose catabolism? What is dialysis in biochemistry? What are Lewy body proteins? What is the catabolic pathway of pseudomonas oxidizes...
a α-Hydroxyketones in bioactive moleculars or as synthetic precursors. b Classic Passerini or Ugi reaction. c Petasis boronic acid-Mannich reaction. d Passerini-type coupling reaction of boronic acids (this work). Full size image Multicomponent reactions (MCRs) are often prized for their concise...
IR spectra were recorded on an FT-IR spectrometer, and only major peaks are reported in cm−1. HRMS and mass data were recorded by ESI on a TOF mass spectrometer. 2.2. General procedure for synthesis of terphenyls To a mixture of β,γ-unsaturated ketone (0.7 mmol) in dioxane (5...
A verbal account of some of these results was presented at the 4th International Symposium on Heterogeneous Catalysis and Fine Chemicals, Basel, Switzerland, September 8–12, 1996. catalysts, mostly zeolites. The results obtained are given in Table 1. As the results in Table 1 show, the follow...
In the case of alkyl phenyl ketones (K25 and K26), the yield of the target products was substantially reduced, possibly because alkyl phenyl ketones are more prone than other groups to undergo competitive cyclization to afford pyrazoles as a byproduct. However, for those ketones (K27–K29) ...
The separation of the ketones from the reaction product may usually be readily accomplished by fractional distillation, especially if narrow-boiling fractions or pure compounds are employed as the unsaturated compounds. It is also possible to use other conventional methods of separation, however, such ...
a number of ways among which is included both the oxidation and the catalytic dehydrogenation of secondary alcohols. Higher secondary alcohols of five or more carbon atoms are, however, difficult to manufacture by the method of treating the olefins with sulfuric acid followed by hydrolysis and ...