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 Manganese(III) Acetate Initiated Oxidative Free Radical Reactions between 2-Amino-1,4-naphthoquinones and β-Dicarbonyl Compounds, published in 2000-08-25, which mentions a compound: 18362-64-6, Name is 2,6-Dimethyl-3,5-heptanedione, Molecular C9H16O2, COA of Formula: C9H16O2.
Manganese(III) acetate oxidative free radical reaction between 2-amino-1,4-naphthoquinones and β-dicarbonyl compounds is described. With 2-anilino-1,4-naphthoquinone, benzo[b]acridine-6,11-dione and benzo[f]indole-4,9-diones were obtained. In most cases, benzo[b]acridine-6,11-dione is the major product. The reaction of 2-alkylamino-1,4-naphthoquinone with 1,3-diones gave benzo[f]indole as the only product. When 2-alkylamino-1,4-naphthoquinone was treated with β-keto esters, three benzo[f]indoles were obtained.
Compounds in my other articles are similar to this one(2,6-Dimethyl-3,5-heptanedione)COA of Formula: C9H16O2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica