Potassium Carbonate → 3-methyl-8-(3-(trifluoromethoxy)phenoxy)-1-(3,3,3-trifluoropropyl)-7-((2-(trimethylsilyl)ethoxy)methyl)-1H-purine-2,6(3H,7H)-dione

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 3-methyl-8-(3-(trifluoromethoxy)phenoxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-1H-purine-2,6(3H,7H)-dione (500 mg, 1.06 mmol, intermediate 12, step 2) in DMF (6 mL) was added 3,3,3-trifluoropropyl methanesulfonate (305 mg, 1.59 mmol) followed by potassium carbonate (439 mg, 3.17 mmol). The reaction was stirred at 60° C. overnight. The mixture was diluted with ethyl acetate and extracted with brine. The organic phase was dried and concentrated to give 3-methyl-8-(3-(trifluoromethoxy)phenoxy)-1-(3,3,3-trifluoropropyl)-7-((2-(trimethylsilyl)ethoxy)methyl)-1H-purine-2,6(3H,7H)-dione (510 mg, 84.6% yield) as yellow syrup. LCMS retention time 2.275 min; LCMS MH+ 569.

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