Potassium Carbonate → 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, 6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl ester

Participants

Reaction Steps

A reactor was equipped with an overhead stirrer in the central neck and charged with 45.0 g of 1-(3-tert-butyl-5-(6-hydroxynaphthalen-2-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione (97.8 weight %, 106 mmol, 1.0 equivalent) and 21.9 g of 325 mesh potassium carbonate (159 mmol, 1.5 equivalents). The atmosphere was purged with nitrogen gas while the solids were stirred. The flask was charged with 445 mL of N,N-dimethylformamide, and the slurry was stirred to dissolve the 1-(3-tert-butyl-5-(6-hydroxynaphthalen-2-yl)-4-methoxyphenyl)pyrimidine-2,4(1H,3H)-dione. The purge was stopped and the reaction was conducted under a slight positive pressure of nitrogen gas. Perfluorobutanesulfonyl fluoride (35.2 g, 117 mmol, 1.1 equivalents) was added in one portion, and the mixture was stirred vigorously to mix the immiscible liquids overnight.

Provenance & Evidence