Results 291 to 300 of about 36,445 (329)

ChemInform Abstract: Phosphorylation of Thiophenes [PDF]

open access: possibleChemInform, 2008
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Alexander M. Pinchuk   +2 more
openaire   +2 more sources

Double photoionization of thiophene and bromine-substituted thiophenes

The Journal of Chemical Physics, 2008
We report the double photoionization spectra of thiophene, 3-bromothiophene, and 3,4-dibromothiophene using a coincidence spectroscopy technique based on electron time-of-flight measurements. Spectra have been recorded between the onset and 40.814 eV using He IIα radiation. The He I photoelectron spectrum of 3,4-dibromothiophene has also been measured.
P. Linusson   +11 more
openaire   +4 more sources

Redox chemistry of thiophene, pyrrole and thiophene-pyrrole-thiophene oligomers

Synthetic Metals, 1999
Abstract Electrochemical properties of oligopyrroles and thiophene-pyrrole-thiophene oligomers, which are key-step intermediates in electropolymerization processes, have been investigated by means of fast electrochemistry, flash photolysis and pulse radiolysis techniques.
Jean-Marie Catel   +5 more
openaire   +2 more sources

Conducting copolymers of thiophene functionalized polystyrenes with thiophene

Journal of Electroanalytical Chemistry, 2005
Abstract Thiophene capped polystyrenes (TCP1, TCP2) were synthesized by atom transfer radical polymerization of styrene followed by Suzuki condensation with 2-thiophene boronic acid. Electrically conducting graft polymers of TCP1 and TCP2 with thiophene were achieved by electrochemical methods. Characterization of the graft polymers were performed by
Levent Toppare   +6 more
openaire   +3 more sources

Flexible Routes to Thiophenes [PDF]

open access: possibleOrganic Letters, 2013
AbstractThree convergent routes for the preparation of thiophenes are described.
Jullien, Hélène   +3 more
openaire   +5 more sources

Electrophilic substitution on the thiophen ring. Part I. Bromination of thiophen and deuteriated thiophen

Journal of the Chemical Society B: Physical Organic, 1970
A study of salt effects and activation parameters indicates that the mechanism of bromination of thiophen in aqueous acetic acid is the same as that of benzene compounds. There is an isotope effect (kH/kD) of 1·3, which is shown to be secondary and does not represent slow proton loss.
Anthony R. Butler, James B. Hendry
openaire   +2 more sources

Electronic spectrum of thiophen and some deuterated thiophens

Journal of the Chemical Society, Faraday Transactions 2, 1972
The electronic absorption spectra of thiophen and of some deuterated thiophens have been studied in the range 2500–1400 A. Three electronic transitions, with origins at 41 595, 48 330 and 53 270 cm–1 in C4H4S and two Rydberg series leading to the limit 71 570 cm–1 were analyzed.
G. Di Lonardo   +3 more
openaire   +2 more sources

A new synthesis of benzo[b]thiophenes and benzo[c]thiophenes by annulation of disubstituted thiophenes

The Journal of Organic Chemistry, 1986
Annelation de R-3 thiophenecarbaldehyde-2, -carboxylate-2 de methyle et -carbonitrile-2 et de R-4 thiophenecarboxylate-3 de methyle et -carbonitrile-3 avec des accepteurs de Michael: obtention de benzo [b] thiophenes disubstitues-5,6 et de leurs derives amino ou hydroxy-7 et d'amino- ou hydroxy-4 benzo [c] thiophenes disubstitues-5 ...
A. M. Van Leusen, J. W. Terpstra
openaire   +3 more sources

The thiophene connection [PDF]

open access: possiblePure and Applied Chemistry, 1998
Abstract
M. Feng, E. P. Lira, R. Boettcher
openaire   +1 more source

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