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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1925039Generated: October 30, 2026

2,4-Bis(methyloxy)-5-(4-methyl-1,3-thiazol-2-yl)pyrimidine → 5-(4-methyl-1,3-thiazol-2-yl)-2,4(1H,3H)-pyrimidinedione

https://huagongshe.com/reaction/1925039

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,4-Bis(methyloxy)-5-(4-methyl-1,3-thiazol-2-yl)pyrimidineHCID 59448370—
SolventHydrochloric AcidHCID 313—
Solvent1,4-DioxaneHCID 31275—
Product5-(4-methyl-1,3-thiazol-2-yl)-2,4(1H,3H)-pyrimidinedioneHCID 13599057288.3%

Reaction Conditions

Temperature90 °C

Reaction Steps

2,4-bis(methyloxy)-5-(4-methyl-1,3-thiazol-2-yl)pyrimidine (Prep40, 280 mg, 0.861 mmol) was dissolved in 18 mL of hydrochloric acid 4M in dioxane and the resulting mixture was stirred in a round bottomed flask at 90° C. for 2 hours. Then it was cooled to rt and dried under vacuum to afford the title compound as a yellow solid (300 mg, 0.760 mmol)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08178549B2
Source datasetuspto-grants-2012_05
ORD IDord-94e95d24e6f843b79c08b737dba71578
Source noteuspto-grants-2012_05