Results 11 to 20 of about 635,495 (333)

Regioselective Reaction of HeterocyclicN-Oxides, an Acyl Chloride, and Cyclic Thioethers [PDF]

open access: yesThe Journal of Organic Chemistry, 2018
Treatment of electron deficient pyridine N-oxides with 4-nitrobenzoyl chloride and a cyclic thioether in the presence of triethylamine leads to the corresponding 2-functionalized product in up to a 74% isolated yield. The transformation can also be accomplished with alternative nitrogen containing heterocycles, including quinolines, pyrimidines, and ...
Przemyslaw Frei   +6 more
openaire   +6 more sources

Regioselective Three-Component Reaction of Pyridine N-Oxides, Acyl Chlorides, and Cyclic Ethers [PDF]

open access: yesOrganic Letters, 2017
A novel three-component reaction of pyridine N-oxides, acyl chlorides, and cyclic ethers is described. Treatment of an electron-deficient pyridine N-oxide with an acyl chloride in the presence of a cyclic ether at 25-50 °C leads to a substituted pyridine as a single regioisomer in up to 58% isolated yield.
D. Heulyn Jones   +4 more
openaire   +4 more sources

New Conjugated Benzothiazole-N-oxides: Synthesis and Biological Activity

open access: yesMolecules, 2009
Eleven new 2-styrylbenzothiazole-N-oxides have been prepared by aldol – type condensation reactions between 2-methylbenzothiazole–N-oxide and para-substituted benzaldehydes.
Pavlína Foltínová   +3 more
doaj   +2 more sources

Perovskite oxides for redox oxidative cracking of n-hexane under a cyclic redox scheme

open access: greenApplied Catalysis B: Environmental, 2019
Ryan B. Dudek   +5 more
openalex   +3 more sources

Metal-Free Eliminative C-H Arylthiolation of 2H-Imidazole N-Oxides with Thiophenols

open access: yesChemistry, 2023
A synthetic strategy based on reactions of cyclic imine oxides, namely 2H-imidazole 1-oxides, with thiophenols mediated by acetyl chloride was successfully applied as a convenient tool to obtain a series of novel azaheterocyclic molecules, including ...
Egor A. Nikiforov   +5 more
doaj   +1 more source

Role of non-covalent interactions at the oxidation of 2,5-di-Me-pyrazine-di-N-oxide at glassy carbon, single-walled and multi-walled carbon nanotube paper electrodes

open access: yesCarbon Trends, 2021
Recently in our work it was shown that the catalytic efficiency of organic compound oxidation in the presence of electrochemically generated radical cations of aromatic di-N-oxides was increased several times using single-walled (SWCNT) or multi-walled ...
S.I. Kulakovskaya   +8 more
doaj   +1 more source

Synthesis of Sterically Shielded Nitroxides Using the Reaction of Nitrones with Alkynylmagnesium Bromides

open access: yesMolecules, 2022
Sterically shielded nitroxides, which demonstrate high resistance to bioreduction, are the spin labels of choice for structural studies inside living cells using pulsed EPR and functional MRI and EPRI in vivo.
Sergey A. Dobrynin   +8 more
doaj   +1 more source

Cu-Mg-Fe-O-(Ce) complex oxides as catalysts of selective catalytic oxidation of ammonia to dinitrogen (NH3-SCO) [PDF]

open access: yes, 2020
Multicomponent oxide systems 800-Cu-Mg-Fe-O and 800-Cu-Mg-Fe-O-Ce were tested as catalysts of selective catalytic oxidation of ammonia to dinitrogen (NH3-SCO) process.
Górecka, Sylwia   +5 more
core   +1 more source

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