Results 21 to 30 of about 3,217 (192)

Understanding the Regioselectivity and the Molecular Mechanism of [3 + 2] Cycloaddition Reactions between Nitrous Oxide and Conjugated Nitroalkenes: A DFT Computational Study

open access: yesMolecules, 2022
Regiochemical aspects and the molecular mechanism of the [3 + 2] cycloaddition between nitrous oxide and conjugated nitroalkenes were evaluated on the basis of the wb97xd/6-311 + G(d) (PCM) computational study.
Ewa Dresler   +2 more
doaj   +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

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

Nickel-catalysed asymmetric Michael Additions of 2-acetylazaarenes to nitroalkenes.

open access: yes, 2015
Azaarenes are of widespread chemical significance, being present in numerous chiral, biologically active natural products, and serving as building blocks for the discovery of new medicines, agrochemicals, and functional molecules.
Simpson, Alain
core   +3 more sources

Modular access to chiral cyclopentanes via formal [2+2+1] annulation enabled by palladium/chiral squaramide relay catalysis

open access: yesTetrahedron Chem, 2022
An enantio- and diastereodivergent [2+2+1] annulation reaction of allyl ketones, acidic methylene compounds, and nitroalkenes to assemble highly functionalized cyclopentanes from readily available substances enabled by asymmetric relay catalysis of ...
Lian-Feng Fan   +3 more
doaj   +1 more source

Enantioselective nickel-catalysed Michael additions of azaarylacetates and acetamides to nitroalkenes [PDF]

open access: yes, 2012
I. Catalytic Conjugate Allylation of Alkylidene Malonates Nucleophilic conjugate addition of allylsilanes and allylstannanes to alkylidene malonates under the action of ytterbium catalysis in the presence of hexafluoro-isopropanol has been developed ...
Fallan, Charlene
core   +3 more sources

An Efficient Method for the N-Bromosuccinimide Catalyzed Synthesis of Indolyl-Nitroalkanes

open access: yesMolecules, 2009
An efficient and practical method for the synthesis of indolyl-nitroalkane derivatives catalyzed by N-bromosuccinimide is described. The generality of this method was demonstrated by synthesizing an array of diverse 3-substituted indole derivatives by ...
Ching-Fa Yao   +6 more
doaj   +1 more source

Post-Translational Modification of Proteins Mediated by Nitro-Fatty Acids in Plants: Nitroalkylation

open access: yesPlants, 2019
Nitrate fatty acids (NO2-FAs) are considered reactive lipid species derived from the non-enzymatic oxidation of polyunsaturated fatty acids by nitric oxide (NO) and related species.
Lorena Aranda-Caño   +7 more
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

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