Hydrochloric Acid → HCID 70872130, compound

Participants

Reaction Conditions

Reaction Steps

N,2,6-Trimethyl-N-[4-(methylsulfanyl)phenyl]furo[2,3-d]pyrimidin-4-amine (Composition No. 125) To a 25 mL round bottom flask was weighed N (143 mg, 0.5 mmol) and was added DMF (2 mL) to afford a solution. The flask was purged with argon for five min followed by cooling down to 0° C. using ice bath. Sodium hydride (36 mg, 1.5 mmol) was added to the solution at 0° C. The solution was stirred for 30 min at 0° C. under argon atmosphere. Dimethyl sulfate (150 mg, 1.2 mmol) was introduced to the reaction mixture with the help of a syringe and the flask was warmed to room temperature. The mixture was stirred at room temperature for another 3 h at the end of which 1 N hydrochloric acid (5 mL) was added carefully to quench the reaction. The reaction solvent was removed under reduced pressure and the residue was suspended in water (20 mL). The suspension was extracted using ethyl acetate (10 mL×2). Combined organic extracts were washed with brine (10 mL) dried (anhydrous sodium sulfate) and concentrated under reduced pressure. Silica gel (200 mg) was added and solvent evaporated to afford a plug. Column chromatography by elution with hexane:ethyl acetate (5:1) afforded 78 mg (52%) of Composition No. 125 as a light yellow solid: Rf 0.5 (AcOEt/Hexane, 1:3); 1H NMR (DMSO-d6) δ 2.18 (s, 3H), 2.49 (s, 3H), 2.54 (s, 3H), 3.47 (s, 3H), 4.73 (s, 1H), 7.30-7.32 (d, 2H,), 7.38-7.39 (d, 2H); Anal. Calcd. for C16H17N3OS: C, 64.19; H, 5.72; N, 14.04, S, 10.71. Found C, 64.26; H, 5.68; N, 13.90, S, 10.80.

Provenance & Evidence