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

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.

1. customdry round bottom reaction flask
2. customequipped with a stirrer and an addition funnel
3. customforming
4. customa reaction
5. customAfter 24 hours the reaction was terminated via the addition of 80 mL of 10% HCl
6. concentrationThe reaction was concentrated at reduced pressure
7. additiondiluted with dichloromethane
8. washwashed with 10% HCl (2×100 mL)
9. customwith water (2×100 mL) forming an organic phase
10. dry with materialThe organic phase was dried over anhydrous sodium sulfate
11. concentrationconcentrated at reduced pressure
12. customThe crude product was purified by column chromatography

ORD record

ord-0a63d40216774e82bbe149d15da00464

Source dataset

uspto-grants-2013_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08378061B2