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
From N–H Nitration to Controllable Aromatic Mononitration and Dinitration─The Discovery of a Versatile and Powerful <i>N</i>-Nitropyrazole Nitrating Reagent
nitration has become an important endeavor in both academia and industry. Herein, we report the identification of a powerful nitrating reagent, 5-methyl-1,3-dinitro-1H-pyrazole, from the N-nitro-type reagent library constructed using a practical N–H nitration method. This nitrating reagent behaves as a controllable source of the nitronium ion, enabling mild and scalable nitration of a broad range of (hetero)arenes
Drew, Journal of the Chemical Society, 1920, vol. 117, p. 1618
作者:Drew
DOI:——
日期:——
Tchitchibabine; Bestougeff, Bulletin de la Societe Chimique de France, 1936, vol. <5> 3, p. 423,424
作者:Tchitchibabine、Bestougeff
DOI:——
日期:——
122. Nucleophilic displacement reactions in aromatic systems. Part VI. Influence of nuclear alkyl groups in the aromatic system. Kinetic of the reactions of chlorodinitrotoluenes and related compounds with piperidine, aniline and ethoxide ions in ethanol, and with methoxide ions in methanol