The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 8-Hydroxyquinoline 1-oxide(SMILESS: OC1=CC=CC2=CC=C[N+]([O-])=C12,cas:1127-45-3) is researched.Reference of 1-(Bromomethyl)-4-ethylbenzene. The article 《Effects of substituents on the intramolecular hydrogen bond in 8-quinolinol-N-oxides》 in relation to this compound, is published in Journal of the Indian Chemical Society. Let’s take a look at the latest research on this compound (cas:1127-45-3).
IR spectral and deuteration studies on 8-quinolinol-N-oxides and its 5-nitro-, 5-nitroso-, 5-amino-, 5-phenylazo-, 5,7-dibromo- and 5,7-diiodo-derivatives in solid and in solution state confirm the presence of a strong intramol. unsym. H bond involving the hydroxyl hydrogen atom and the N-oxide oxygen atom. The structure of the complex absorption pattern in the region 2850 cm-1-1800 cm-1 is explained in terms of Fermi resonance interaction between the νOH of O-H…O and the overtone and combination bands of (δOH + νC-O) and other fundamental vibrations of the mol. The absence of any significant absorptions in the νOH region in the spectra of 5,7-dichloro- and 5,7-dinitro-derivatives coupled with strong and broad absorption in 1500 cm-1-600 cm-1 region is perhaps due to the presence of very short hydrogen bonds in these compounds
Although many compounds look similar to this compound(1127-45-3)Synthetic Route of C9H7NO2, numerous studies have shown that this compound(SMILES:OC1=CC=CC2=CC=C[N+]([O-])=C12), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider