2 edition of decomposition of Tetralin hydroperoxide. found in the catalog.
decomposition of Tetralin hydroperoxide.
Andrew Michael Wyner
Written in English
|Contributions||Toronto, Ont. University.|
|The Physical Object|
|Number of Pages||150|
In order to check the complete decomposition and thermal stability of 1-tetralin hydroperoxide, reaction was carried out at temperature of 90 °C. Surprising, negligible amount of 1-tetralin hydroperoxide was notice in the reaction › 百度文库 › 互联网. The liquid-phase oxidation of hydrocarbons, where the point of the oxidative attack is a matrix diagdown diagup endmatrix CH 2 group, has been shown to proceed at a rate independent of the oxygen pressure and proportional to the square of the hydrocarbon concentration. This arises from a primary chain reaction which gives a hydroperoxide as the primary ://
phenol were produced selectively from tetralyl and cumyl hydroperoxide respectively. It was found that the faster the inhibition of the oxidation of tetralin, the higher the activity of the boric acids and their derivatives in the decomposition of tetralyl hydroperoxide. The acid strength of the For example, magnesium phthalocyanine will catalyse the decomposition of tetralin hydroperoxide in hot hydrocarbon solvents, and this catalysis is accompanied by a bright chemiluminescence1,://
Read "Mechanism of inhibitory action of metal dithiocarbamates. II. Autooxidation of tetralin and cumene and decomposition of tetralin hydroperoxide in the presence of zinc bisisobutyldithiocarbamate, Journal of Polymer Science (In Two Sections)" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your :// oxidation of tetralin at °C and identified it as -hydroperoxy tetralin. Hock and Lang The radical decomposition of benzyl hydroperoxide leads to benzaldehyde and benzyl alcohol40 while ethylbenzene hydroperoxide delivers 1-phenylethanol41 and acetophenone. In the radical decomposition of cumene hydroperoxide, one finds to
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1. In the decomposition of tetralin hydroperoxide, catalyzed by nickel acetylacetonate, the yield of the free radicals is 2–3% of the decomposed hydroperoxide.
Data were obtained that testify to the role of the “cage effect” in the mechanism for the decomposition of the hydroperoxide. We measured the equilibrium constant for the formation of the complex of the catalyst with the Kinetics of the decomposition of tetralin hydroperoxide in acidic and basic solvents (Miss)J.
Hay, (Miss)N. Johnstone, C. Tipper and R. Williams Abstract. The first page of this article is displayed as the abstract. Studies of the autoxidation of tetralin. Part II. The decomposition of tetralin hydroperoxide Decomposition of tetralin hydroperoxide in the presence of zinc diisopropyldithiophosphate and N‐phenyl‐β‐naphthylamine has been performed in solvents such as n‐decane, decalin, tetralin Decomposition of tetralin hydroperoxide, the primary auto- oxidation product, markedly increased upon addition of quinoline.
While tet- ralin hydroperoxide in dodecane produced deposits more rapidly than did tetra- lin itself, much greater deposition occurred when both tetralin hydroperoxide These two results suggest that decomposition of tetralin hydroperoxide by metal atoms inside the pores of Co-MOF is unlikely.
Download: Download high-res image (KB) Download: Download full-size image; Fig. (a) Optimized structure of ethylbenzene hydroperoxide (ROOH) in the presence of a fixed tetrahedral cobalt :// Japan's largest platform for academic e-journals: J-STAGE is a full text database for reviewed academic papers published by Japanese societies The kinetics of the decomposition of Tetralin and tert-butyl hydroperoxides by dilauryl thiodipropionate were determined in the temperature range 30°°C.
The reaction had an induction period which was eliminated by acetic acid but not by dilauryl sulfinyldipropionate. The rate equation d/[Hydroperoxide]/dt= k2/[Hydroperoxide]/[Sulfur compound] was obtained in the initial stages of the However, tetralin hydroperoxide is stable under normal conditions and can be rigorously purified and stored for an extended period of time without decomposition.
Tetralin hydroperoxide was not detected in the hydroxylation of tetralin except in those experiments that were performed under particular favorable conditions for its :// The presence of the inorganic iron compound promotes decomposition of tetralin hydroperoxide into peroxy and hydroxy radicals that can either rearrange into the desired 1-tetralone product or further the oxidation process.
In still another embodiment of the invention, hydrogen peroxide is added to the oxidation reaction alone or in conjunction 1: Chen C, Lin CC. Mechanism of aliphatic hydroxylation. Tetralin hydroperoxide as an intermediate in the hydroxylation of tetralin in rat-liver homogenate.
Biochim Biophys Acta. Dec 23;(2) PubMed PMID: 2: ROBERTSON A, WATERS WA. Studies of the autoxidation of tetralin; the decomposition of tetralin :// The rate of the cobalt-catalyzed decomposition of tetralin hydroperoxide in fatty acid solvents was first order with respect to hydroperoxide and second order with respect to the cobalt, and it was inversely proportional to the square of the acid concentration; i.e., -dROOH/dt=″(Co) 2 (ROOH)/(Acid) rate constant, k″, was found to be almost constant, regardless of the molecular It has been established that the amount of tetralin, cumene and t-butyl hydroperoxide decomposed during the initial stages of the reaction (ΔROOH), referred to the initial concentration of dithiophosphate(Do) increases with decreasing Do.
This effect can be explained by the conversion of Do to SO2 in the presence of excess ROOH, which leads to the heterolytic decomposition of the :// tized cw laser-induced decomposition of tetralin (1) in the pres ence of hydrogen atom chain terminators 11 Table V.
Total recovery of material, conversion, and dehydrogenation to ethylene loss ratio from FVP of tetralin (1) at 10"® torr and vari ous oven temperatures 14 Table VI. Total recovery of material, conversion, and dehydrogenation ?article=&context=rtd.
The rate of the cobalt-catalyzed decomposition of tetralin hydroperoxide in fatty acid solvents was first order with respect to hydroperoxide and second order with respect to the cobalt, and it was inversely proportional to the square of the acid concentration; i.e A method for the separation and analysis of tetralin hydroperoxide and its decomposition products by high pressure liquid chromatography has been developed.
Elution with a single, mixed solvent from a micron-Porasil column was employed. Constant response factors (internal standard method) over large concentration ranges and reproducible The thermal decompositions of tetralin and of ~- tetralyl hydroperoxide (THPO) in the presence of tetralin have been investigated in the temperature range °C by employing DTA and A.
The thermochemical decomposition of tetralin is a one-stage process in the temperature range °C under non-isothermal conditions.
It was shown that tetralin retards the thermal decomposition of T H P Europe PMC is an ELIXIR Core Data Resource Learn more >.
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National Library of Medicine (NCBI/NLM).It includes content provided to the PMC International archive by participating (HPLC) method for analysis of tetralin hydroperoxide and lts decomposition products in dodecane solutlon.
Study of the effects of nitrogen heterocycles on the rates of formation and decompositlon of tetralin hydroperoxide in dodecane solution. Investigation of the effects of adding tetralin hydroperoxide, tetra lone, and tetralol on The product of the benzoyl peroxide sensitized oxidation of tetralin is the hydroperoxide as it is in the thermal and heavy metal catalysed oxidations.
There is clear evidence that the reaction has a chain mechanism. As the concentration of benzoyl peroxide is increased the oxidation rate rises to a constant value which shows that the peroxide both initiates and terminates the reaction ://.
the metal-catalyzed autoxidation of tetralin: ii. THE COBALT-CATALYZED AUTOXIDATION OF UNDILUTED TETRALIN AND OF TETRALIN IN CHLOROBENZENE. Canadian Journal of Chemistry41 (8), In a study of the "induced" decomposition of hydroperoxides by alkoxy radicals, tert-butyl hydroperoxide has been decomposed by the action of di-tert-butyl peroxyoxalate at 45°.
The antioxidant is a powerful Lewis acid as is shown by the decomposition products formed from cumene hydroperoxide by both the catechol hindered-phenyl phosphite and phosphate (Figure 13).
At low hydroperoxide to phosphite ratios the product is primarily that expected from a homolytic breakdown of hydroperoxide, namely i-methyl