Direct methoxylation of nitroarenes and nitroazaarenes with alkaline methoxides via nucleophilic displacement of an aromatic hydrogen atom
作者:Takehiko Kawakami、Hitomi Suzuki
DOI:10.1039/a909675b
日期:——
at room temperature results in the displacement of an aromatichydrogen at the 4-position by methoxide, affording 2,4-dinitroanisole and its 6-substituted derivatives, respectively, in low to moderate yield. In contrast, an equimolar reaction under similar conditions leads to the replacement of the nitro group in preference to the ringhydrogen. The reaction does not take place with lithium methoxide
Electrochemically promoted nucleophilic aromatic substitution in room temperature ionic liquids—an environmentally benign way to functionalize nitroaromatic compounds
作者:Hugo Cruz、Iluminada Gallardo、Gonzalo Guirado
DOI:10.1039/c1gc15303j
日期:——
tetrafluoroborate ([BMIM]BF4), 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF6), 1-butyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)-imide ([BMIM]TFSI) and 1-butyl-3-methylimidazolium acetate ([BMIM]AcO) have been chosen since they have different properties in terms of solvation effects that can increase the regioselectivity of the reaction. The nucleophiles used to study the feasibility
Magnetische Kernresonanz- und «Molecular Orbital»- untersuchungen über die struktur von M<scp>EISENHEIMER</scp>-komplexen 8. Mitteilung über nucleophile aromatische Substitutionsreaktionen [1]
作者:P. Caveng、P. B. Fischer、E. Heilbronner、A. L. Miller、H. Zollinger
DOI:10.1002/hlca.19670500312
日期:1967.4.20
(1) The NMR. spectra of the stable methoxide addition complexes of 2,4-dinitro-, 2,4,6-trinitro- and 2,4-dinitro-6-cyano-anisole, and the intramolecular (spiro) reaction product of 1-(2′-hydroxyethoxy)-2,4,6-trinitrobenzene demonstrate that these products are MEISENHEIMER (σ−) complexes (addition of base in position 1).
Die Erfindung betrifft neue hochmolekulare Arylensulfidpolymere mit gegebenenfalls zusätzlich verbesserter Beständigkeit gegen UV-Strahlung, hergestellt durch Aufschmelzen von Arylensulfidpolymeren, vorzugsweise PPS, mit Polynitroverbindungen, bzw. mit Mononitroverbindungen, die mindestens einen weiteren zur Reaktion mit dem Arylensulfidpolymeren befähigten Substituenten tragen.