Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents, Part I: Pyridine mono-carboxylic acids [PDF]
Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method.
Marinković Aleksandar D. +3 more
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Substituent and structural effects on the kinetics of the reaction of N-(substituted phenylmethylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane [PDF]
The rate constants for the reaction of twenty-two N-(substituted phenyl methylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane were determined in absolute ethanol at 30 °C.
BRATISLAV Z. JOVANOVIC +3 more
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The kinetics of the reaction of 6-substituted nicotinic acids and some p-substituted benzoic acids with diazodiphenylmethane in various alcohols [PDF]
Rate constants have been determined for the reactions of diazodiphenylmethane with a number of 6-substituted nicotinic acids and p-substituted benzoic acids in twelve alcohols. A comparative study was used to evaluate and compare the Hammett r values and
MILICA M. MISIC-VUKOVIC +2 more
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A comparative LFER study of the reactivity of pyridineacetic, pyridineacetic acids N-oxide and substituted phenylacetic acids with diazodiphenylmethane in various alcohols [PDF]
Rate constants have been determined for the reactions of diazodiphenylmethane (DDM) with 3- and 4-pyridineacetic acid, 3- and 4-pyridineacetic acid N-oxide and some meta- and para-substituted phenylacetic acids in twelve alcohols.
MILICA M. MISIC-VUKOVIC +2 more
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The comparative study of linear solvatation energy relationship for the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents [PDF]
Protic and aprotic solvent effects on the reactivity of picolinic, nicotinic and isonicotinic acid, as well as of some substituted nicotinic acids with diazodiphenylmethane (DDM) were investigated.
Drmanić Saša Ž. +3 more
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Reactivity of b-aroylacrylic acids with diazodiphenylmethane Lj. S. STEVOVIĆ 1, B. J. DRAKULIĆ 2, I.O. JURANIĆ 3, S.Ž. DRMANIĆ 4 and B.Ž. JOVANOVIĆ 4 1 INOTEH-Belgrade, 2 Center for Chemistry IChTM, Belgrade, 3 Faculty of Chemistry, University ...
Editorial
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Investigation of the reactivity of 4-pyrimidinecarboxylic, 6-hydroxy-4-pyrimidinecarboxylic and 5-hydroxyorotic acids with diazodiphenylmethane in various alcohols. Part III [PDF]
Rate constants for the reaction of diazodiphenylmethane (DDM) with 4-pyrimidinecarboxylic, 6-hydroxy-4-pyrimidinecarboxylic and 5-hydroxyorotic acids were determined in twelve protic solvents at 30 °C using the well known UV-spectrophotometric method ...
FATHI H. ASSALEH +3 more
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Reactivity of cyclohex-1-enylcarboxylic and 2-methylcyclohex-1-enylcarboxylic acids with diazodiphenylmethane in aprotic solvents [PDF]
Rate constants for the reaction of diazodiphenylmethane with cyclohex-1-enylcarboxylic acid and 2-methylcyclohex-1-enylcarboxylic acid were determined in nine aprotic solvents, as well as in seven protic solvents, at 30°C using the appropriate UV ...
VERA V. KRSTIC +2 more
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Diarylmethyl Ethers for the Protection of Polyols
The paper discusses the use of diarylmethyl ethers for the protection of hydroxyl groups, in particular, carbohydrate hydroxyl groups. The formation of these ethers can be done nonselectively by the thermal reactions of diryldiazomethanes via a carbene mechanism or by tin(II) halide catalysis of the diazo compounds with diols.
Sigthor Petursson, Christophe Len
wiley +1 more source
Effect of Temperature and Solvent on the 1,3-Dipolar Cycloaddition of Diazodiphenylmethane with Several Dipolarophiles [PDF]
Abstract The title reaction is studied with a series of CN- or COOCH3-substituted dipolarophiles. All the reactions obey the second-order rate law. The activation enthalpies and entropies are 44–52 kJ mol−1 and −(129–166) J K−1 mol−1, respectively. The rate constants are insensitive to solvent.
Yosuke Yoshimura +2 more
openaire +1 more source

