Application of 6623-81-0 , The common heterocyclic compound, 6623-81-0, name is 2,4-Dihydroxy-5-methoxypyrimidine, molecular formula is C5H6N2O3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
Compound 110: To a solution of compound 109 (1.42 g, 10 mmol) in dry acetonitrile (30 mL) was added BSA (10.5 g, 50 mmol). The reaction mixture was stirred at 60 C for 4 h and cooled to room temperature. To the reaction mixture were added compound 103 (5.04 g, 10 mmol) and TMSOTf (2.7 mL, 15 mmol). The resulted reaction mixture was stirred at 60 C for 4 h. Upon completion of the reaction as monitored by TLC, the reaction mixture was treated with methylene chloride and saturated sodium bicarbonate. The organic phase was separated, and the aqueous phase was extracted with methylene chloride. The combined organic phase was dried over anhydrous Na2SO4. The drying agent was filtered off, and the filtrate was concentrated under reduced pressure. The crude product was purified by flash chromatography on a silica gel column giving 3.8 g desired compound 110 in 65% yield.
The synthetic route of 6623-81-0 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Roy, Atanu; Conlee, Christopher R.; De Fougerolles, Antonin; Fraley, Andrew W.; EP2918275; (2015); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia