1,3-Benzenedicarboxylic acid, 5-hydroxy-, 1,3-dimethyl ester → Dimethyl 5-(1,1,2-trifluoro-2-(1,1,2,3,3,3-hexafluoro-2-(perfluoropropoxy)propoxy)ethoxy)isophthalate

Participants

Reaction Steps

In a dry box, tetrahydrofuran (THF, 1000 mL) and dimethyl 5-hydroxyisophthalate (42.00 g, 0.20 mol) were added to an oven dry round bottom reaction flask equipped with a stirrer and an addition funnel; then potassium t-butoxide (6.16 g, 0.055 mol) was added. 1,1,1,2,2,3,3-Heptafluoro-3-(1,1,1,2,3,3-hexafluoro-3-(1,2,2trifluorovinyloxy)propan-2-yloxy)propane (216 g, 0.50 mol) was then added via the addition funnel forming a reaction. The reaction was allowed to stir at room temperature. After 24 hours the reaction was terminated via the addition of 80 mL of 10% HCl. The reaction was concentrated at reduced pressure, diluted with dichloromethane, washed with 10% HCl (2×100 mL) and then with water (2×100 mL) forming an organic phase and a crude product. The organic phase was dried over anhydrous sodium sulfate and concentrated at reduced pressure. The crude product was purified by column chromatography to give 86.07 g (67.32%) yield of dimethyl 5-(1,1,2-trifluoro-2-(1,1,2,3,3,3-hexafluoro-2-(perfluoropropoxy)propoxy)ethoxy)isophthalate.

Provenance & Evidence