Potassium Carbonate → Dimethyl 5-(1,1,2-trifluoro-2-(1,1,2,3,3,3-hexafluoro-2-(perfluoropropoxy)propoxy)ethoxy)isophthalate

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Anhydrous THF (12 liters) and dimethyl 5-hydroxy-isophthalate (2100 g) were combined under nitrogen in an oil jacketed 22 liter RB flask equipped with a condenser, mechanical stirrer, pressure equalizing addition funnel. To this stirred solution was added anhydrous potassium carbonate (345 g), followed by 1,1,1,2,2,3,3-heptafluoro-3-(1,1,1,2,3,3-hexafluoro-3-(1,2,2-trifluorovinyloxy)propan-2-yloxy)propane (4750 g). Ca. 2 liters of additional THF was used to wash all the reagents into the reaction vessel. The resulting mixture was refluxed for 12.0 hours.

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