On February 28, 1982, McNab, Hamish published an article.Application In Synthesis of 5-Chloroquinoxaline The title of the article was Carbon-13 nuclear magnetic resonance spectra of quinoxaline derivatives. And the article contained the following:
I (R = H, 5-Me, 5-Cl, 5-OMe, 6-Me; 5,6-Me2; R1 = H, 2-Me, 2-Cl, 2-OMe; 2,3-Me2) are prepared by the cyclocondensation of a phenylenediamine with an α-oxoaldehyde or an α,β-diketone; their 13C NMR are assigned by a first order anal. 2,3-(H2N)2C6H3Me was treated with OHCCHO and NaHSO3 in H2O to give I (R = 5-Me, R1 = H). The 13C-H coupling constants are reported for some I. Acceptable additivity of substituent effects is found within the quinoxaline series. The experimental process involved the reaction of 5-Chloroquinoxaline(cas: 62163-09-1).Application In Synthesis of 5-Chloroquinoxaline
The Article related to quinoxaline preparation carbon 13 nmr, glyoxal cyclocondensation aminotoluene, Physical Organic Chemistry: Resonance Spectra (Electron Spin, Nuclear Magnetic and Fourier Transform Nuclear Magnetic, Quadrupole, etc.) and other aspects.Application In Synthesis of 5-Chloroquinoxaline
Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider