Triethylamine → HCID 66588808, compound

Participants

Reaction Conditions

Reaction Steps

To diethyl 2-(3-(4-(ethoxycarbonyl)-5-hydroxy-6-oxo-1,6-dihydropyrimidin-2-yl)-5-(hydroxymethyl)piperidin-1-yl)maleate (1.05 g, 2.32 mmol) in THF at 0° C. was added triethylamine (0.975 mL, 6.99 mmol) and methanesulfonyl chloride (0.541 mL, 6.99 mmol). The reaction mixture was stirred at 23° C. for 3 hours. H2O (50 mL) was then added and the mixture was extracted with ethyl acetate (3×50 mL). The combined organic fractions were dried (MgSO4) and concentrated in vacuo. To the crude material dissolved in EtOH (40 mL) were added K2CO3 (0.643 g, 4.66 mmol) and H2O (1.7 mL). The reaction mixture was stirred at 23° C. for 36 hours. The solvent was removed in vacuo and the crude material was purified by silica gel column chromatography (Biotage flash chromatography system) using a gradient of ethyl acetate:methanol:AcOH (95:4:1) to (40:40:10) to afford 1.05 g (33% yield) of the title compound. 1H NMR (400 MHz, DMSO-D6) δ ppm 3.83-4.26 (7 H, m), 2.68-3.40 (6H, m), 2.02 (1 H, m), 1.79-1.89 (2 H, m), 1.07-1.31 (10 H, m). LCMS (+ESI, M+H+) m/z: 450.

Provenance & Evidence