[EN] 2-METHYLENE-4-OXO-BUTANOIC ACID DRIVATIVES FOR THE TREATMENT OF INFLAMMATION [FR] DÉRIVÉS D'ACIDE 2-MÉTHYLÈNE-4-OXO-BUTANOÏQUE POUR LE TRAITEMENT D'UNE INFLAMMATION
Radical Annulation of 2-Cyanoaryl Acrylamides via C═C Double Bond Cleavage: Access to Amino-Substituted 2-Quinolones
作者:Wen-Jin Xia、Tai-Gang Fan、Zhi-Wei Zhao、Xin Chen、Xiang-Xiang Wang、Ya-Min Li
DOI:10.1021/acs.orglett.1c02281
日期:2021.8.6
2-cyanoaryl acrylamides via C═C double bond cleavage has been developed for facile and efficient access to a broad spectrum of functionalized 4-amino-2-quinolones, which are important N-heterocycles. In this transformation, the solvent THF is demonstrated to play a crucial role, and the addition of alkyl radicals to nitrile, 1,5-hydride shift, and cleavage of the C–C bond are involved in the mechanism
Poly(acrylonitrile-co-3-aminocarbonyl-3-butenoic acid methyl ester): A better precursor material for carbon fiber than acrylonitrile terpolymer
作者:An-Qi Ju、Meng-Juan Li、Miao Luo、Ming-Qiao Ge
DOI:10.1016/j.cclet.2014.03.009
日期:2014.9
In order to improve the stabilization and spinnability of polyacrylonitrile, a bifunctional comonomer containing both ester and amide groups was synthesized to prepare poly(acrylonitrile-co-3-aminocarbonyl-3-butenoic acid methyl ester) [P(AN-co-ABM)] copolymers used as the carbon fiber precursor instead of poly(acrylonitrile-acrylamide-methyl acrylate) 113(AN-AM-MA)1 terpolymer. The differential scanning calorimetry and thermogravimetry results show that the stabilization of P(AN-co-ABM) have been remarkably improved by ABM compared with P(AN-AM-MA) terpolymer, such as lower initiation temperature, broadened exothermic peak and smaller activation energy. Moreover, the spinnability of P(AN-co-ABM) is also improved by ABM due to the lubrication of ester groups in ABM. This study clearly shows that P(AN-co-ABM) copolymer is a better material for use as a carbon fiber precursor than P(AN-AM-MA) terpolymer. (C) 2014 An-Qi Ju. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
BARGAR T. M.; RILEY C. M., SYNTH. COMMUN., 1980, 10, NO 6, 479-487