Results 11 to 20 of about 64,700 (251)

ALKYLATION OF BENZENE WITH LONG CHAIN OLEFINS OVER SOLID-ACID CATALYST

open access: yesJournal of Engineering, 2009
This investigation is concerned with the linear alkylbenzene production reaction by the alkylation of benzene with long chain olefins C10-C13 over various prepared solid acid catalysts.
Abdul Halim A. K. Mohammed   +1 more
doaj   +1 more source

Carbocation rearrangement, methyl migration, and long-range hydrogen transfer in phenyl fatty acid esters

open access: yesJournal of Chemical Research, 2023
Various isomers can be observed in the Friedel–Crafts alkylation of benzene. However, the mechanism and influence of these isomerization reactions were still unclear. In this work, several methyl phenylundecanoate were analyzed by gas chromatography–mass
Jian-Qiao Lang   +3 more
doaj   +1 more source

Synthesis of tetrahydrokhusitone: Annulation of the cyclohexane ring by free radical and carbanionic sequence of reactions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The synthesis of norcadinane sesquiterpene tetrahydrokhusitone 1 has been achieved by a new method for annulation of cyclohexane ring involving a sequence of free radical δ-alkylation of the non-activated carbon atom and intramolecular carbanionic ...
Petrović Goran, Čeković Živorad
doaj   +1 more source

3-(2-Diisopropylaminoethyl)-5-(4-methoxybenzylidene)thiazolidine-2,4-dione

open access: yesMolbank, 2022
Thiazolidine-2,4-dione core is widely used in the medicinal chemistry of different types of potential drug-like small molecules. In the present work, the synthesis of a novel non-condensed thiazolidine-2,4-dione-bearing derivative is reported by the two ...
Serhii Holota   +3 more
doaj   +1 more source

Progress of decreasing toxic polycyclic aromatic hydrocarbons content in coal-tar pitch by alkylation method

open access: yesMeitan kexue jishu, 2023
Coal-tar pitch (CTP) is a substance produced by ambient and/or vacuum distillation of high-temperature coal tar, although CTP has a large yield in China, however its wide application is limited due to its high toxicity.
ZHANG Wenshuo   +5 more
doaj   +1 more source

Regioselective Alkylation of an Oxonaphthalene-Annelated Pyrrol System

open access: yesMolbank, 2009
The regioselective alkylation of an oxonaphthalene-annelated pyrrole system is reported. The regioselectivity of alkylation can be controlled by the selection of the solvent.
Helmut Spreitzer, Christiane Puschmann
doaj   +1 more source

Formation of Amphiphilic Molecules from the Most Common Marine Polysaccharides, toward a Sustainable Alternative?

open access: yesMolecules, 2021
Marine polysaccharides are part of the huge seaweeds resources and present many applications for several industries. In order to widen their potential as additives or bioactive compounds, some structural modifications have been studied.
Tiphaine Wong   +6 more
doaj   +1 more source

Study on the Alkylation Reactions of N(7)-Unsubstituted 1,3-Diazaoxindoles

open access: yesMolecules, 2017
The chemistry of the 5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one (1,3-diazaoxindole) compound family, possessing a drug-like scaffold, is unexplored. In this study, the alkylation reactions of N(7)-unsubstituted 5-isopropyl-1,3-diazaoxindoles bearing ...
Eszter Kókai   +5 more
doaj   +1 more source

Catalytic Alkylation of Brown Coal and Peat

open access: yesEurasian Chemico-Technological Journal, 2012
The alcohol alkylation of low-grade metamorphic coal and peat in the presence of mineral and organic acids was studied using FTIR, NMR, and GC-MS. The impact of the reaction conditions on the yield of extractable matter was investigated experimentally ...
S. I. Zherebtsov, Z. R. Ismagilov
doaj   +1 more source

Direct C2–H alkylation of indoles driven by the photochemical activity of halogen-bonded complexes

open access: yesBeilstein Journal of Organic Chemistry, 2023
A light-driven metal-free protocol for the synthesis of sulfone-containing indoles under mild conditions is reported. Specifically, the process is driven by the photochemical activity of halogen-bonded complexes formed upon complexation of a sacrificial ...
Martina Mamone   +4 more
doaj   +1 more source

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