Synthesis, crystal structure and calculation of oxides of 2-methylamino-3-methyl quinoxaline
作者:Rui Wang、Min Zhang、Wenfeng Wang、Xucheng Wang、Yaofeng Yuan、Junjian Li
DOI:10.1016/j.molstruc.2020.128826
日期:2020.12
Abstract Monoxide and dioxide of animo quinoxaline were synthesized and characterized by 1H NMR, 13C NMR and HRMS. The result shows that monoxide is main product. 1H NMR analysis, quantum calculation and crystalstructure all indicate that the monoxide is 4-oxide structure but not 1-oxide structure. The subsequent discussions of electronic effect and steric effect of 1-oxide and 4-oxide support the