Synthesis of some 4H-pyrimido[2,1-b]benzothiazol-4-ones was written by Alaimo, Robert J.. And the article was included in Journal of Heterocyclic Chemistry in 1973.Category: thiazole The following contents are mentioned in the article:
A series of 8-substituted and 7,8-disubstituted-4-oxo-3-(4H-pyrimido[2,1-b]benzothiazole)carboxylic acids (I) and esters including a 9-aza analog were synthesized from substituted 2-aminobenzothiazoles and di-Et ethoxymethylenemalonate. No significant antiparasitic activity was detected. This study involved multiple reactions and reactants, such as 6-Isopropoxybenzo[d]thiazol-2-amine (cas: 15850-81-4Category: thiazole).
6-Isopropoxybenzo[d]thiazol-2-amine (cas: 15850-81-4) belongs to thiazole derivatives. Thiazole is a five-membered, unsaturated, planar, π-excessive heteroaromatic containing one sulfur atom and one pyridine-type nitrogen atom at position 3 of the cyclic ring system. Electrophilic attack at nitrogen depends on the presence of electron density at nitrogen as well as the position and nature of substituent linked to the thiazole ring.Category: thiazole
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica