Results 31 to 40 of about 597,754 (265)
Frontiers in Chemistry, 2021 This work presents the first transition metal-free synthesis of oxygen-linked aromatic polymers by integrating iterative exponential polymer growth (IEG) with nucleophilic aromatic substitution (SNAr) reactions.
Tyler J. Jaynes +10 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2014 Three new porphyrin aminoalkyl dibenzylphosphoramidates were synthesized by nucleophilic aromatic substitution of one p-fluorine atom of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (TPPF20) by primary aminoalkyl dibenzylphosphoramidates.
Marcos C. de Souza +5 more
doaj +1 more source
Dehalogenation of Aromatics by Nucleophilic Aromatic Substitution
, 2016 Nucleophilic aromatic substitution has been implicated as a mechanism for both the biotic and abiotic hydrodehalogenation of aromatics. Two mechanisms for the aqueous dehalogenation of aromatics involving nucleophilic aromatic substitution with hydride ...
Daniel Sadowsky (1750234) +2 more
core +1 more source
Crystal structure of 4-(4-methoxyphenoxy)benzaldehyde
Acta Crystallographica Section E: Crystallographic Communications, 2015 The title compound, C14H12O3, was synthesized via the nucleophilic addition of 4-methoxyphenol to 4-fluorobenzaldehyde. The dihedral angle between the least-squares planes of the benzene rings is 71.52 (3)° and the C—O—C angle at the central O atom is ...
Andreas Schäfer +5 more
doaj +1 more source
Three-Component Condensation of β-Ketonitriles, 4-Fluorobenzaldehyde, and Secondary Cyclic Amines
Reactions, 2022 A new three-component condensation of β-ketonitriles, 4-fluorobenzaldehyde, and secondary cyclic amines was developed. A possible reaction mechanism has been proposed including Knoevenagel condensation followed by aromatic nucleophilic substitution.
Dmitry V. Osipov +2 more
doaj +1 more source
Molbank, 2023 A monosubstituted benzene-1,2-diamine building block, N1-(3,5-bis(trifluoromethyl)benzyl)benzene-1,2-diamine, was prepared in two steps from commercially available 3,5-bis(trifluoromethyl)benzylamine and 1-fluoro-2-nitrobenzene, while the use of 3,5-bis ...
Luka Ciber +5 more
doaj +1 more source
Specific nucleophile–electrophile interactions in nucleophilic aromatic substitutions
Organic & Biomolecular Chemistry, 2013 We herein report results obtained from an integrated experimental and theoretical study on aromatic nucleophilic substitution (S(N)Ar) reactions of a series of amines towards 1-fluoro-2,4-dinitrobenzene in water. Specific nucleophile-electrophile interactions in the title reactions have been kinetically evaluated.
Ormazábal Toledo, R. +3 more
openaire +7 more sources
Nucleophilic substitution reactions of some polyhalogenated compounds [PDF]
, 1987 Rate measurements for the reactions of a series of polyfluoro - and polychloro - pyridines with aniline and ammonia in 60/40 dioxan/water at 25ºC has shown that chlorine, when ortho and para to the position of attack, is activating with respect to ...
Martin, Peter Arnold
core
Emerging experimental and computational methods for studying redox‐regulated structural transitions
FEBS Letters, EarlyView.Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass +2 more
wiley +1 more source
Substituição nucleofílica aromática em 1,2-dicloro-4,5-dinitrobenzeno com aminas [PDF]
, 2006 TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.O 1,2-dicloro-4,5-dinitrobenzeno, DCDNB, reage com aminas primárias em condições de temperatura e pressão ambientes, formando produtos ...
Ricardo, Juan
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