7758-89-6Relevant articles and documents
Preparation of biphenols by oxidative coupling of alkylphenols using a recyclable copper catalyst
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, (2008/06/13)
A method for producing biphenols by oxidative coupling of dialkylphenols which proceeds in two stages using a copper amine complex which is catalytically effective in each stage is disclosed. A novel copper amine complex is also disclosed wherein the complex exhibits high catalytic activity for the oxidative coupling of substituted phenols under mild conditions, has dual (two stage) activity and can be readily recycled and reused.
Preparation of biphenols by oxidative coupling of alkylphenols using a recyclable copper catalyst
-
, (2008/06/13)
A method for producing biphenols by oxidative coupling of dialkylphenols which proceeds in two stages using a copper amine complex which is catalytically effective in each stage is disclosed. A novel copper amine complex is also disclosed wherein the complex exhibits high catalytic activity for the oxidative coupling of substituted phenols under mild conditions, has dual (two stage) activity and can be readily recycled and reused.
Preparation of biphenols by oxidative coupling of alkylphenols using copper catalyst
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, (2008/06/13)
This invention relates to a method for producing biphenols by oxidative coupling of dialkylphenols which proceeds in two stages using a copper amine complex which is catalytically effective in each stage.
Microwave spectra of metal chlorides produced using laser ablation
Hensel, Kristine D.,Styger, Christian,Jaeger, Wolfgang,Merer, A. J.,Gerry, M. C. L.
, p. 3320 - 3328 (2007/10/02)
An apparatus has been constructed to produce metal compounds using laser ablation and to investigate their rotational spectra with a microwave Fourier transform (MWFT) cavity spectrometer.The first three such compounds that have been studied are silver chloride, aluminum (I) chloride, and copper (I) chloride, produced by ablation of silver, aluminum, and copper rods in the presence of chlorine gas, using a Q-switched Nd:YAG laser (532 nm).The high resolution and sensitivity available with the MWFT cavity spectrometer have permitted the first determination of nuclear spin-rotation coupling constants for AlCl and CuCl.These constants have been used to examine the electronic structures of the molecules.Values of the rotational and nuclear quadrupole coupling constants have also been improved for the three metal chlorides.
Process for the preparation of dialkyl carbonates
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, (2008/06/13)
A process is described for the preparation of dialkyl carbonates by oxidative carbonylation of the corresponding alcohol in the presence of a copper-containing catalyst at elevated temperature and elevated pressure, which process permits simple separation of the copper-containing catalyst by sedimentation, and of the reaction water in the case of methanol by simple distillation from the reaction solution.
Characterization of matrix-isolated Cu(CO)Cl. IR spectroscopic investigation and ab initio calculation
Plitt, Harald S.,B?r, Michael R.,Ahlrichs, Reinhart,Schn?ckel, Hansgeorg
, p. 463 - 465 (2008/10/08)
Cocondensation of CuCl and CO in an argon matrix leads to new IR absorptions near 2157 and 362 cm-1, which are assigned to a linear molecule Cl-Cu-CO. By means of large-scale ab initio calculations (CPF, MP2) the CuC distance is predicted to be 181 pm (CPF) and the reaction energy of CuCl + CO → ClCu-CO is reported to be 155 kJ mol-1 exothermic (CPF). Bonding in this complex is discussed. The CuC bond is found to be formed by predominant σ-bonding from carbon to copper while dπ*-back-donation from Cu to C plays a minor role.
Mechanism of CuCl and CuO Chemiluminescence in Microwave-induced Plasma Afterglows at 300 K
Vinckier, Chris,Corthouts, Johan,Jaegere, Stephan De
, p. 603 - 607 (2007/10/02)
The sublimation of the copper halides CuCl or CuCl2 in microwave-induced plasma afterglows results in the chemiluminescence of CuCl at 300 K.In O2-He afterglows the A, B, C, D, E and F trasitions up from V'= 3 are observed, while H2-He afterglows are much less effective, showing only A and B transitions.In addition, a weak chemiluminescence of CuO is detected in O2-He afterglows.Various chemiluminescence mechanisms are discussed, from which it appears that the termolecular recombination of hydrogen or oxygen atoms, with CuCl or CuO acting as a third body, is the most plausible chemiexcitation mechanism.
Steroids including a spiro ring in position 17, the process for their preparation and their use
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, (2008/06/13)
STR1 Products having the formula (I) wherein R1 is an aryl or aralkyl, R2 is a hydrocarbonated radical (1-18 carbon atoms), the dotted lines indicate an optional bond, the cycles A, B and C represent (II), (III), (IV), (V), (VI); R' and R" are H, alkyl (1-4 carbon atoms). Re is H, alkyl (1-6 carbon atoms), acyl, and their salts, their preparation, their application as medicaments, the pharmaceutical compositions containing them and intermediaries.
Phenyl pyridones and insectidal use thereof
-
, (2008/06/13)
A compound of formula (I) STR1 wherein R1, R2, R4 and R5 are independently selected from hydrogen, halogen, lower alkyl optionally substituted by halogen, lower alkoxy optionally substituted by halogen and lower alkenyl optionally substituted by halogen; R3 is halogen, amino, mono- or di(lower alkyl)-amino, lower alkyl substituted by halogen, lower alkoxy optionally substituted by halogen and lower alkenyl optionally substituted by halogen provided that R3 is not monochloro or monobromo-methyl; R6 is oxygen or sulphur; R7 and R10 are independently selected from hydrogen, halogen, lower alkyl optionally substituted by halogen, lower alkoxy optionally substituted by halogen, and lower thioalkoxy optionally substituted by halogen; and R8 is hydrogen, halogen, optionally substituted lower alkyl, optionally substituted lower alkoxy, optionally substituted lower thioalkoxy, cyano, nitro, optionally substituted oximino, optionally substituted lower alkenyl, optionally substituted aryloxy, optionally substituted amino or S(O)nR11 wherein n is 0, 1 or 2 and R11 is optionally substituted lower alkyl; R9 is hydrogen, or lower alkyl optionally substituted by halogen, lower alkenyl optionally substituted by halogen or CO2 R12 wherein R12 is lower alkyl optionally substituted by halogen; provided that R1, R2, R3, R4 and R5 are not all hydrogen; and further provided that when R3 is trifluoromethyl and R1 and R5 are halogen, R2 and R4 are not both hydrogen, or R7, R8, R9 and R10 do not comprise from one to four halogen or trihalomethyl substituents.
Synergistic insecticidal compositions containing dione esters
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, (2008/06/13)
Insecticidal compositions are provided which contain dione esters in admixture with other insecticides such as pyrethroid, carbamate or organophosphates. The use of the compositions of this invention provides synergistic kill of insects.
