Results 71 to 80 of about 229 (107)

A LFER Kinetic Study of The Reaction of 5‐Substituted Orotic Acids with Diazodiphenylmethane

International Journal of Chemical Kinetics, 2016
ABSTRACTLinear free energy relationships (LFER) were applied to the kinetic data for the reaction of 5‐substituted orotic acids, series 1, with diazodiphenylmethane (DDM) in N,N–dimethylformamide and compared with results obtained for 2‐substituted benzoic acids, series 2.
Assaleh, Fathi H.   +6 more
openaire   +2 more sources

Copolymer statistics during esterification of syndiotactic poly(methacrylic acid) with diazotoluene and diazodiphenylmethane

Die Makromolekulare Chemie, 1974
AbstractSyndiotactic poly(methacrylic acid) has been partially esterified with diazotoluene or diazodiphenylmethane in extension of work carried out with diazomethane1. The sequence statistics of the resulting cosyndiotactic benzyl methacrylate–methacrylic acid and diphenylmethyl methacrylate–methacrylic acid copolymers have been studied with 1H‐NMR ...
Dieter Strasilla, Ernst Klesper
openaire   +1 more source

Thermal decomposition of diazodiphenylmethane catalysed by sulphur compounds in the presence of oxygen

Journal of the Chemical Society, Perkin Transactions 2, 1981
Thermal decomposition at 80 °C of diazodiphenylmethane in oxygen-saturated chlorobenzene in the presence of sulphur compounds (5)–(8) affords tetraphenylethylene, benzophenone, benzophenone azine, as well as small amounts of bisdiphenylmethyl ether.
Luisa Benati   +2 more
openaire   +1 more source

Diazodiphenylmethane and Monosubstituted Butadienes: Kinetics and a New Chapter of Vinylcyclopropane Chemistry

Helvetica Chimica Acta, 2008
AbstractDiazodiphenylmethane (DDM) undergoes cycloadditions to 1‐substituted buta‐1,3‐dienes exclusively at the C(3)C(4) bond. At room temperature, the N2 loss from the initially formed 4,5‐dihydro‐3H‐pyrazoles 2 is faster than the cycloaddition and furnishes the vinylcyclopropane derivatives 7 and 9 with structural retention at the C(1)C(2) bond.
Akihiro Ohta   +4 more
openaire   +1 more source

Volumetric Study on the 1,3-Dipolar Cycloaddition Reaction of Diazodiphenylmethane with Several Olefins

Bulletin of the Chemical Society of Japan, 1983
Abstract A high pressure kinetic study was made of the 1,3-dipolar cycloaddition reaction of Ph2CN2 with dimethyl maleate (DMM), dimethyl fumarate (DMF), methyl acrylate (MA), maleonitrile (MN), fumaronitrile (FN), and acrylonitrile (AN) in toluene at 25 °C. The activation volumes (ΔV\eweq) at 1 bar obtained for DMM, DMF, MA, MN, FN, and
Yosuke Yoshimura   +2 more
openaire   +1 more source

Reactivity of 2-substituted cyclohex-1-enylacetic acids with diazodiphenylmethane in various alcohols

J. Chem. Soc., Perkin Trans. 2, 1994
The reactivities of 2-substituted cyclohex-1-enylacetic acids with diazodiphenylmethane in eleven alcohols has been investigated. The solvent effect is interpreted in terms of the influence of the relative permittivity on the rate constants. The multiple linear correlation of log k with the Kirkwood function of relative permittivity, Taft σ* value for ...
Gordana S. Ušćumlić   +1 more
openaire   +1 more source

The Reactivity of 2‐(4‐Phenylsubstituted)‐α,β‐Unsaturated Carboxylic Acids with Diazodiphenylmethane

Quantitative Structure-Activity Relationships, 1991
AbstractIn connection with a study of the transmission of polar effects through ring double bonds, double bonds in open chain systems and delocalized double bonds, the reactivity of 2‐(4‐phenylsubstituted)‐α,β‐unsaturated carboxylic acids with diazodiphenylmethane in ethanol was investigated.
Gordana S. Ušćaumlića   +2 more
openaire   +1 more source

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