Results 91 to 100 of about 252 (117)

ChemInform Abstract: Reactivity of 2‐Substituted Cyclohex‐1‐enylacetic Acids with Diazodiphenylmethane in Various Alcohols

ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
G. S. USCUMLIC, M. D. MUSKATIROVIC
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ChemInform Abstract: THERMAL DECOMPOSITION OF DIAZODIPHENYLMETHANE CATALYZED BY SULFUR COMPOUNDS IN THE PRESENCE OF OXYGEN

Chemischer Informationsdienst, 1982
AbstractWährend die Thermolyse der Titelverbindung (I) in O2‐ gesättigtem Lösungsmittel zu Benzophenon (II) (Ausb. 70%) und dem Azin (III) (30%) führt, wird bei einem Zusatz von S‐Verbindungen wie z.B. 1,2,3‐Benzothiadiazol (BTD) oder Dibenzylsulfid (DBS), der die Reaktion mit steigender Konzentration zunehmend beschleunigt, hauptsächlich das Ethylen ...
L. BENATI, P. C. MONTEVECCHI, P. SPAGNOLO   +2 more
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Polar effects in the reactions of a series of substituted diazodiphenylmethanes with tetracyanoethylene in benzene

Journal of the Chemical Society, Perkin Transactions 2, 1978
The kinetics of the reactions of meta- and para-substituted diazodiphenylmethanes (DDM) with tetracyanoethylene (TCNE) in benzene are reported. The corresponding 1,1-diaryl-2,2,3,3-tetracyanocyclopropanes were produced almost quantitatively and the second-order rate constants k increased with the electron-donating ability of the substituents; the ...
Takumi Oshima, Akiteru Yoshioka, Toshikazu Nagai   +2 more
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Kinetics of the Reactions of Pyridine and Pyridine-N-oxide Carboxylic Acids and Substituted Benzoic Acids with Diazodiphenylmethane in Various Alcohols

Journal of Chemical Research Synopses, 1998
Solvent effects on the reactivity of pyridine and pyridine-N-oxide carboxylic acids and p-substituted benzoic acids in their reaction with diazodiphenylmethane (DDM) in alcohols have been investigated and the rate constants interpreted by Hammett ...
Drmanić, Saša, Jovanović, Bratislav Ž., Misić-Vuković, Milica   +2 more
exaly   +2 more sources

Investigation of electronic effects in the reaction of diazodiphenylmethane with pyridine and pyridine N-oxide carboxylic acids

J. Chem. Soc., Perkin Trans. 2, 1974
The empirical Hammett treatment has been applied to the investigation of structure–reactivity relationships for pyridine and pyridine N-oxide carboxylic acids in the reaction with diazodiphenylmethane. The values obtained for the pyridine aza-group (σ2 0·878, σ3 0·740, σ41·105) are in good agreement with the literature values for the alkaline ...
Djordje M. Dimitrijević, Živorad D. Tadić, Milica M. Mišić-Vuković, M. Muškatriović   +3 more
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Kinetics of the reactions of biphenyl-4-carboxylic acids and 1-naphthoic acids with diazodiphenylmethane in various alcohols

Journal of the Chemical Society, Perkin Transactions 2, 1982
Rate constants have been determined for the reactions at 30, 35, and 40 °C of diazodiphenylmethane with 4′-substituted biphenyl-4-carboxylic acids and 4-substituted 1-naphthoic acids in 14 alcohols. Hammett ρ values have been evaluated for the reactions in 11 of the alcohols.
P. Ananthakrishnanadar, N. Kannan, G. Varghesedharumaraj   +2 more
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ChemInform Abstract: POLAR EFFECTS IN THE REACTIONS OF A SERIES OF SUBSTITUTED DIAZODIPHENYLMETHANES WITH TETRACYANOETHYLENE IN BENZENE

Chemischer Informationsdienst, 1979
AbstractDie Geschwindigkeitskonstanten 2. Ordnung für die Titelreaktion nehmen mit der Donatorfähigkeit der Substituenten in den Diazomethanen (I) zu.
T. OSHIMA, A. YOSHIOKA, T. NAGAI
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ChemInform Abstract: The Reactivity of 4′‐Substituted‐biphenyl‐2‐carboxylic Acids with Diazodiphenylmethane in Various Alcohols.

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
G. S. USCUMLIC, V. V. KRSTIC
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ChemInform Abstract: THE NATURE OF THE ORTHO EFFECT PART 11, REACTION RATES OF CARBOXYLIC ACIDS WITH DIAZODIPHENYLMETHANE

Chemischer Informationsdienst, 1975
AbstractZahlreiche Cärbonsäuren (I) werden mit Diphenyldiazomethan (II) umgesetzt.
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The transmission of polar effects. Part IX. The ionization and esterification with diazodiphenylmethane of 9-substituted 10-triptoic acids

Canadian Journal of Chemistry, 1969
A series of 9-substituted 10-triptoic acids have been prepared. Their pKa values in 80% 2-methoxy-ethanol–water and 50% ethanol–water at 25° and rate coefficients for esterification with diazodiphenyl-methane in five alcohols at 30° have been measured. The results have been analyzed by linear free energy relations.
Keith Bowden, D. C. Parkin
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