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 Dipole moments of substituted 1-phenyl-2-pyrrolidones, published in 1970, which mentions a compound: 7661-33-8, Name is 1-(4-Chlorophenyl)pyrrolidin-2-one, Molecular C10H10ClNO, Computed Properties of C10H10ClNO.
The dipole moments of 1-phenyl-2-pyrrolidone and its 2′-methyl, 3′-methyl, 4′-methyl, 2′-chloro, 3′-chloro, 4′-chloro, 2′-methoxy, 3′-methoxy, and 4′-methoxy derivatives were measured in dioxane at 30° and the dipole moments of the 1st 4 compounds also in cyclohexane at 30°. The dipole moments were larger in dioxane than in cyclohexane. The dipole moments of all the compounds except 1-(3-methoxyphenyl)-2-pyrrolidone and 1-(4-methoxyphenyl)-2-pyrrolidone agree with the values calculated by applying Eyring’s treatment and assuming free rotation of the pyrrolidonyl group about the bond joining it to the aromatic ring.
This literature about this compound(7661-33-8)Computed Properties of C10H10ClNOhas given us a lot of inspiration, and I hope that the research on this compound(1-(4-Chlorophenyl)pyrrolidin-2-one) can be further advanced. Maybe we can get more compounds in a similar way.
Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts