In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Solvent effect on rotational isomerism of furfural and its 5-substituted derivatives, published in 1975, which mentions a compound: 2689-65-8, Name is 5-Iodo-2-furaldehyde, Molecular C5H3IO2, Recommanded Product: 5-Iodo-2-furaldehyde.
The solvent effect on the rotamer distribution of I (R = H) was determined from the 5Jα,4 and the 6Jα,5 in the PMR; 5Jn was inversely proportional to 6J. Polar solvents favored the cis-OO population. The substituent effect on the equilibrium was determined from the 5J for I (R = NO2, Cl, Br, I, Me2N); electron donating substituents also favored the cis-OO rotamer.
In some applications, this compound(2689-65-8)Recommanded Product: 5-Iodo-2-furaldehyde is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem