反应详情

温度

50 °C

To a solution of 7-(4-chlorobenzyl)-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dione (50 mg, 0.11 mmol, example 1) in DMF (1 mL) was added iodoethane (18.7 mg, 0.12 mmol) followed by potassium carbonate (23 mg, 0.16 mmol). Then the mixture was stirred at 50° C. for 3 h. The mixture was diluted with ethyl acetate and extracted with brine and saturated aqueous ammonium chloride solution. The organic phase was dried and concentrated to give crude solid product which was collected and washed with ethanol to give 7-(4-chlorobenzyl)-1-ethyl-3-methyl-8-(3-(trifluoromethyl)phenoxy)-1H-purine-2,6(3H,7H)-dione (15 mg, 26.7% yield) as white solid. 1H-NMR (DMSO-d6) δ 7.77 (s, 1H), 7.69-7.73 (m, 3H), 7.43 (s, 4H), 5.46 (s, 2H), 3.91-3.93 (q, 2H), 3.29 (s, 3H), 1.11-1.14 (t, 3H). LCMS retention time 3.109 min; LCMS MH+ 479.

1. extractionextracted with brine and saturated aqueous ammonium chloride solution
2. customThe organic phase was dried
3. concentrationconcentrated
4. customto give crude solid product which
5. customwas collected
6. washwashed with ethanol