Water → 4,4,4-Trifluoro-2,2-dimethylbutanoic acid

To a solution of ethyl 4,4,4-trifluoro-2,2-dimethylbutanoate (426 mg, 2.15 mmol) in MeOH (15 mL) was added a solution of LiOH in H2O (2 N, 5.35 mL, 10.75 mmol). The reaction mixture was stirred at room temperature overnight. The reaction was concentrated and the resulting mixture was diluted with DCM and washed with 3 N HCl. The aqueous layer was extracted twice with DCM. The combined organic layers were dried over MgSO4, filtered and concentrated to yield 4,4,4-trifluoro-2,2-dimethylbutanoic acid as a colorless oil (370 mg, 100% yield). 1H NMR (400 MHz, CDCl3) ppm 1.35 (s, 6H), 2.48 (ABqt, J=12 Hz, 2H).

1. concentrationThe reaction was concentrated
2. additionthe resulting mixture was diluted with DCM
3. washwashed with 3 N HCl
4. extractionThe aqueous layer was extracted twice with DCM
5. dry with materialThe combined organic layers were dried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated

ORD-Eintrag

ord-1792ae22976c494e808011ab13ff7dea

Quelldatensatz

uspto-grants-2012_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08304403B2