19013-22-0Relevant academic research and scientific papers
Visible-Light-Induced Radical Polynitration of Arylboronic Acids: Synthesis of Polynitrophenols
Zhang, Qi,Raveendra Babu, Kaki,Huang, Zhouliang,Song, Jinna,Bi, Xihe
, p. 2891 - 2896 (2018)
We report a visible light-assisted one-pot method for the synthesis of polynitrophenols through radical tandem hydroxylation and nitration of arylboronic acids by utilizing copper(II) nitrate tri-nitydrate as the nitro source. This method features mild conditions, a simple procedure, and good functional group tolerance. Compared to conventional methods, this work provides a straightforward approach for the polynitration of aromatic compounds.
Nucleophilic Reaction of Electron-deficient Pyridone Derivatives. II. Ring Transformation of 1-Substituted 3,5-Dinitro-4-pyridones with Sodio β-Keto Esters
Matsumura, Eizo,Ariga, Masahiro,Tohda, Yasuo
, p. 2891 - 2894 (2007/10/02)
The reaction of 1-substituted 3,5-dinitro-4-pyridones with diethyl sodio-3-oxopentanedioate give 1-substituted 3,5-bis(ethoxycarbonyl)-4-pyridones and sodio-1,3-dinitro-2-propane.On the other hand, the reactions of the 4-pyridones (1b, 1c, and 1d) with ethyl sodioacetoacetate give ethyl 4-hydroxy-3,5-dinitrobenzoate together with aminopyridine homologues, and that of 1a gives furopyridine derivative.On the basis of the concept of soft and hard acids and bases, a stepwisenucleophilic attack of the anion of β-keto esters at the electrophilic center of the 2 and 6-positions or 2 and 3-positions of the 4-pyridones is interpret the variations of the reaction courses.
