Results 21 to 30 of about 3,335 (198)

Mukaiyama-Michael vinylogous additions to nitroalkenes under solvent-free conditions

open access: yesOpen Chemistry, 2012
The first Mukaiyama-Michael vinylogous reaction of a dioxinone-derived silyl ether to nitroalkenes is reported. The conjugate addition is performed in absence of any catalyst under solvent-free conditions, proceeding with satisfactory efficiency with ...
Scettri Arrigo   +3 more
doaj   +3 more sources

The Puzzle of the New Type of Intermediate in the Course of [2 + 2] Cycloaddition with the Participation of Conjugated Nitroalkenes: MEDT Computational Study [PDF]

open access: yesMolecules
The phenomena of regio- and stereoselectivity and the molecular mechanism of the [2 + 2] cycloaddition reaction between (E)-2-arylnitroethenes and the ynamine molecular system were analyzed using wb97xd/6-311 + G(d) (PCM) quantumchemical calculations. It
Radomir Jasiński, Agnieszka Kącka-Zych
doaj   +2 more sources

Nitroalkenes

open access: yes, 2009
The literature up to July 2008 dealing with catalytic enantioselective FC alkylation of aromatic compounds with nitroalkenes has been reviewed. Both metal-mediated and organocatalysis have been employed leading to a vast array of enantiomerically pure compounds most of them of interest in medicinal chemistry.
BERNARDI, LUCA, RICCI, ALFREDO MARCO
core   +3 more sources

Small molecule nitroalkenes inhibit RAD51-mediated homologous recombination and amplify triple-negative breast cancer cell killing by DNA-directed therapies [PDF]

open access: yesRedox Biology, 2023
Nitro fatty acids (NO2-FAs) are endogenously generated lipid signaling mediators from metabolic and inflammatory reactions between conjugated diene fatty acids and nitric oxide or nitrite-derived reactive species.
Lisa Hong   +20 more
doaj   +2 more sources

Chemoselective synthesis of functionalized conjugated nitroalkenes

open access: yesThe Journal of Organic Chemistry, 1992
The present one-pot methodology to obtain conjugated nitroalkenes from aldehydes and nitroalkanes is mild, and highly selective, and proceedsin good yields also on a large scale.
BALLINI, Roberto   +2 more
core   +4 more sources

Enantioselective addition of sodium bisulfite to nitroalkenes. A convenient approach to chiral sulfonic acids [PDF]

open access: yes, 2021
An enantioselective organocatalytic addition of sodium bisulfite to (E)-nitroalkenes has been developed by using a chiral bifunctional organocatalyst. The present methodology provides a variety of chiral β-nitroethanesulfonic acid compounds (17 examples)
Muñoz, M. Carmen   +20 more
core   +1 more source

Organocatalytic Asymmetric Conjugate Addition of Aldehydes to Maleimides and Nitroalkenes in Deep Eutectic Solvents

open access: yesMolecules, 2019
A chiral primary amine-salicylamide is used as an organocatalyst for the enantioselective conjugate addition of α,α-disubstituted aldehydes to maleimides and nitroalkenes.
Alejandro Torregrosa-Chinillach   +3 more
doaj   +1 more source

Nitro Fatty Acids (NO2-FAs): An Emerging Class of Bioactive Fatty Acids

open access: yesMolecules, 2021
Unsaturated nitro fatty acids (NO2-FAs) constitute a category of molecules that may be formed endogenously by the reaction of unsaturated fatty acids (UFAs) with secondary species of nitrogen monoxide and nitrite anions.
Giorgos S. Koutoulogenis, George Kokotos
doaj   +1 more source

The solution photochemistry of nitroalkenes and nitroketones. [PDF]

open access: yes, 2023
The thesis describes an investigation or the solution photochemistry of nitroalkenes and α-nitroketones, The introduction discusses the general concepts of photochemistry and provides a detailed review of the photochemistry of nitroalkenes, nitroalkanes ...
Moles, Peter J.
core   +1 more source

An Improved and Easy Method for the Preparation of 2,2-Disubstituted 1-Nitroalkenes

open access: yes, 2016
Reactions of ketones 1, nitromethane 2, and catalytic amount of piperidine 3 in the presence of mercaptan 6 generate β-nitroalkyl sulfides 7−9. At 0 °C and by the use of dichloromethane as solvent, β-nitroalkyl sulfides 7−9 can be oxidized by m ...
Yeh Wang (3026685)   +6 more
core   +2 more sources

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