Onys’ko, P. P.’s team published research in Zhurnal Obshchei Khimii in 1980 | CAS: 14001-69-5

2-Methoxy-5-nitropyrimidine(cas: 14001-69-5) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Formula: C5H5N3O3

Onys’ko, P. P.; Gololobov, Yu. G.; Remennikov, G.; Cherkasov, V. M. published an article in Zhurnal Obshchei Khimii. The title of the article was 《Anion σ-complexes of phosphorus compounds. VII. σ-Complexes of dialkylphosphites with 5-nitropyrimidines》.Formula: C5H5N3O3 The author mentioned the following in the article:

Reaction of I (R = H, MeO, Ph; R1 = H) with (R2O)2P(O)H (R2 = Me, Et) in presence of Et3N gave II (R, R1, R2, as above). Similar reaction of I (R = H, MeO, R1 = MeO) with (R2O)2P(O)H (R2 = Me, Et) gave III via the corresponding intermediate II. In the experiment, the researchers used many compounds, for example, 2-Methoxy-5-nitropyrimidine(cas: 14001-69-5Formula: C5H5N3O3)

2-Methoxy-5-nitropyrimidine(cas: 14001-69-5) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Formula: C5H5N3O3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia