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 Solution-Phase Synthesis of a Library of 3,5,7-Trisubstituted 3H-[1,2,3]triazolo[4,5-d]pyrimidines, published in 2003-10-31, which mentions a compound: 1194-22-5, Name is 6-Hydroxy-2-methylpyrimidin-4(3H)-one, Molecular C5H6N2O2, SDS of cas: 1194-22-5.
An efficient solution-phase parallel synthesis of a library of 3,5,7-trisubstituted [1,2,3]triazolo[4,5-d]pyrimidines I [R1 = H, Me; R2 = Ph, PhCH2, 4-ClC6H4, 4-MeC6H4, 4-MeOC6H4; R3 = H, R4 = HOCH2CH2, cyclohexyl, Ph, PhCH2, PhNH, PhCH2O, etc.; R3R4 = (CH2)2N(CO2CMe3)(CH2)2] is described. 5-Amino-4,6-dichloropyrimidines II, prepared from monosubstituted amidines in four steps, reacted with primary amines R2NH2 to yield, after the following diazotization/intramol. cyclization, the 7-chloro-3,5-disubstituted [1,2,3]triazolo[4,5-d]pyrimidines III as penultimate intermediates. Final nucleophilic substitution of the 7-chloro group in III with an excess of a primary or secondary amine, a hydrazine or a O-alkyl hydroxylamine proceeds efficiently. Scavenging of the excess amine with a resin-bound isocyanate in the presence of resin-bound piperidine as a base afforded the desired 3,5,7-trisubstituted [1,2,3]triazolo[4,5-d]pyrimidines I in good yields and purities.
The article 《Solution-Phase Synthesis of a Library of 3,5,7-Trisubstituted 3H-[1,2,3]triazolo[4,5-d]pyrimidines》 also mentions many details about this compound(1194-22-5)SDS of cas: 1194-22-5, you can pay attention to it, because details determine success or failure
Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem