Results 11 to 20 of about 252 (117)

Effects of solvent and structure on the reactivity of 2-substituted nicotinic acids with diazodiphenylmethane in aprotic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
The rate constants for the reactions of diazodiphenylmethane (DDM) with 2-substituted nicotinic acids in nine aprotic solvents at 30°C were determined. The obtained second order rate constants in aprotic solvents, were correlated using the Kamlet-Taft
Drmanić Saša Ž.   +2 more
doaj   +3 more sources

Erratum [PDF]

open access: yesJournal of the Serbian Chemical Society, 1999
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
doaj   +2 more sources

The kinetics of the reaction of 6-substituted nicotinic acids and some p-substituted benzoic acids with diazodiphenylmethane in various alcohols [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
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
doaj   +4 more sources

Substituent and structural effects on the kinetics of the reaction of N-(substituted phenylmethylene)-m- and -p-aminobenzoic acids with diazodiphenylmethane [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
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
doaj   +5 more sources

Kinetics and mechanism of the reaction of substituted 4-pyrimidine carboxylic acids with diazodiphenylmethane in dimethylformamide [PDF]

open access: yesJournal of Chemical Research, 2000
Correlation of the data for the reaction of 11 substituted 4-pyrimidine carboxylic acids with diazodiphenylmethane (DDM) in dimethylformamide (DMF) with calculated atomic charges on the carboxylic group showed that the reaction in this solvent may proceed via a concerted transition state.
Jovanović, Bratislav   +4 more
openaire   +2 more sources

Microsolvation Of Carbenes In Superfluid Helium Nanodroplets [PDF]

open access: yes, 2021
Carbenes are classified as an important reactive intermediate in chemical reactions owing to their multiple spin states. Recent studies in matrix isolation technique (3 K) demonstrated that a single water molecule is able to switch the spin state of ...
Khatri, Jai
core   +1 more source

Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents, Part I: Pyridine mono-carboxylic acids [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
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
doaj   +1 more source

Enthalpy-entropy compensation effect in chemical kinetics and experimental errors: a numerical simulation approach [PDF]

open access: yes, 2020
Many kinetic studies concerning homologous reaction series report the existence of an activation enthalpy-entropy linear correlation (compensation plot), its slope being the temperature at which all the members of the series have the same rate constant ...
Mulero Raichs, Mar   +1 more
core   +1 more source

A comparative LFER study of the reactivity of pyridineacetic, pyridineacetic acids N-oxide and substituted phenylacetic acids with diazodiphenylmethane in various alcohols [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
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
doaj   +3 more sources

The comparative study of linear solvatation energy relationship for the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
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
doaj   +1 more source

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