Results 31 to 40 of about 110,461 (301)

A Dual Catalytic Platform for Enabling sp3 α C–H Arylation & Alkylation of Benzamides [PDF]

open access: yes, 2019
A dual catalytic sp3 a C–H arylation & alkylation of benzamides with organic halides is described. This protocol exhibits excellent chemoselectivity and exquisite site-selectivity, offering a complementary reactivity mode to existing sp3 arylation or ...
Jessica, Giacoboni   +5 more
core   +2 more sources

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

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

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

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

Room-Temperature, Base-Mediated Selective Synthesis of 2-(Arylamino)ethanols and 2-Aryloxyethanols

open access: yesSynOpen, 2019
A simple and efficient protocol for base-mediated selective synthesis of 2-(arylamino)ethanols from primary aromatic amines and 2-aryloxyethanols from phenols, promoted by K2CO3 has been achieved under mild conditions.
Rahul B. Sonawane   +3 more
doaj   +1 more source

Alkylation of 2,4-(1H,3H)-Quinazolinediones with Dialkyl Carbonates Under Microwave Irradiations

open access: yesMolecules, 2009
Alkylation is a very important chemical reaction which modifies the biological properties of drugs. Quinazolinedione derivatives are of considerable interest due to their wide array of pharmacological properties.We now report application of a practical ...
Martha Cecilia Meza   +4 more
doaj   +1 more source

Effect of zeolites on the alkylation of aromatics with alkanes using a Pd nanoparticle/solid acid cooperative catalytic system

open access: yesGreen Carbon
The direct alkylation of benzene with alkanes is an effective method for alkylbenzene production. Our group previously discovered that a mixture of supported Pd nanoparticles and solid acids effectively promoted the alkylation of benzene with alkanes ...
Satoshi Misaki   +5 more
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

Synthesis of Multisubstituted 1,4-Dihydrobenzoxazin-2-ones through a One-Pot Nucleophilic N-Alkylation/C-Alkylation of Cyclic α-Imino Esters [PDF]

open access: yes, 2020
A nucleophilic N-alkylation of 2-oxobenzoxazine-2-carboxylates with organozinc reagents with good selectivities and in moderate to good yields is described.
Pons, Carolina   +3 more
core   +2 more sources

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