Results 201 to 210 of about 8,405 (234)

The stereochemistry of reductive dehalogenation

Tetrahedron, 1968
Abstract The stereochemistry of reductive dehalogenation has been examined employing three representative reducing agents—zinc and acetic acid, chromous acetate, and catalytic hydrogenation over Pd C. Chromous acetate and zinc and acetic acid reduce, in greater than 70% yield, just the chlorine atom anti to the double bond in the title compound ...
K.L. Williamson, Y. Fang Li Hsu, E.I. Young   +2 more
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Electrochemical reductive dehalogenation of chlorobenzenes

Russian Chemical Bulletin, 1995
Electrochemical dechlorination of 1,2,3,5-tetrachlorobenzene in methanol and chlorobenzene in dimethylsulfoxide with tetraalkylammonium salts as supporting electrolytes was carried out. The extent of dechlorination depends significantly on the electrode composition.
V. P. Plekhanov, A. I. Tsyganok, S. M. Kulikov   +2 more
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Anaerobic Microbial Reductive Dehalogenation of Chlorinated Ethenes

Bioremediation Journal, 1999
The current knowledge on microbial reductive dechlorination of chlorinated ethenes (CEs) and its application are discussed.
Middeldorp, P.J.M., Luijten, M.L.G.C., van de Pas, B.A., van Eekert, M.H.A., Kengen, S.W.M., Schraa, G., Stams, A.J.M.   +6 more
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Trichloroacetic acid dehalogenation by reductive radicals

Inorganica Chimica Acta, 2007
Abstract Advanced oxidation processes, using either UVC/H2O2 or UVC/K2S2O8, both in the presence of H2CO2 or CH3OH are very efficient in mineralizing aqueous solutions of trichloroacetic acid (TCAA) leaving no toxic residues. The main reaction initiating TCAA depletion is its reduction by the radicals CO 2 - or CH2OH to ...
Pedro David Gara, Ethel Bucharsky, Michael Wörner, André M. Braun, Daniel O. Mártire, Mónica C. Gonzalez   +5 more
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Catalytic reductive dehalogenation of thiophene derivatives

Chemistry of Heterocyclic Compounds, 1982
A method for the preparation of 3-substituted derivatives of thiophene by reductive dehalogenation of 2,5-dihalo-substituted thiophenes in the presence of a palladium complex is proposed. The dehalogenation reaction is a stepwise process. The presence of an acyl group in the 3 position increases the rate of the process.
V. Z. Sharf, S. Z. Taits, A. S. Gurovets, Yu. B. Vol'kenshtein, B. P. Fabrichnyi, S. I. Shcherbakova   +5 more
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Reductive catalytic dehalogenation of light chlorocarbons

Applied Catalysis B: Environmental, 1999
Abstract Several palladium and platinum supported catalysts have been employed in the gas-phase dehalogenation of chloromethanes (CCl4, CHCl3 and CH2Cl2) and chlorobenzene by using molecular hydrogen under mild conditions. A new porous glass material (Vycor) has been found to be a promising carrier for platinum in the selective hydrogenation of CCl4
L. Prati, M. Rossi
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Reductive dehalogenation: A subsurface bioremediation process

Remediation Journal, 1990
AbstractIntroduction and large‐scale production of synthetic halogenated organic chemicals over the last fifty years has resulted in a group of contaminants that tend to persist in the environment and resist both biotic and abiotic degradation. The low solubility of these types of contaminants, along with their toxicity and tendency to accumulate in ...
Judith L. Sims, Joseph M. Suflita, Hugh H. Russell   +2 more
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Modeling Reductive Dehalogenation with Quantum Chemically Derived Descriptors

SAR and QSAR in Environmental Research, 1995
Existing models for the reductive dehalogenation reaction under environmentally relevant conditions use Hammett and Taft coefficients as descriptors. Drawbacks of these descriptors are the limited possibilities for interpretation in terms of reaction mechanisms, and the limited availability of these descriptors for more "exotic' substituents. Therefore,
E, Rorije, J H, Langenberg, J, Richter, W J, Peijnenburg   +3 more
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Reductive dehalogenation of halophenols in sulfite–bisulfate medium

Tetrahedron Letters, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Subbarayappa Adimurthy, Gadde Ramachandraiah   +1 more
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Reductive dehalogenation of 2-iodobenzothiazole with alkanethiols

Journal of the Chemical Society, Perkin Transactions 2, 1976
The reactions of 2-iodobenzothiazole with alkanethiols in methanol afford the unsubstituted benzothiazole as previously found for reactions with thiophenols. The reaction is autocatalytic, the hydroiodic acid produced being responsible for this phenomenon. A mechanism for the reaction is suggested.
Giuseppe Bartoli, Leonardo Di Nunno, Saverio Florio, Michele Fiorentino, Paolo E. Todesco   +4 more
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