Formic Acid → 5-Ethoxycarbonylfuran-2-ylacetic acid

Temperatur

75 °C

5-Chloromethyl-2-furancarboxylic acid ethyl ester (1.0 g, 5.3 mmol), potassium iodide (0.044 g, 0.27 mmol), and chloro(1,5-cyclooctadiene)rhodium(I) dimer (0.26 g, 0.53 mmol) were dissolved in formic acid (25 mL), and the mixture was stirred at 75° C. for 6 hours under a carbon monoxide atmosphere. The solvent was evaporated, and the residue was partitioned between ethyl acetate and aqueous sodium hydrogen carbonate solution. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate. The drying agent was filtered off, the solvent was evaporated, and the residue was purified by silica gel column chromatography to give the title compound (0.61 g).

1. customThe solvent was evaporated
2. customthe residue was partitioned between ethyl acetate and aqueous sodium hydrogen carbonate solution
3. washThe organic layer was washed with saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. filtrationThe drying agent was filtered off
6. customthe solvent was evaporated
7. customthe residue was purified by silica gel column chromatography

ORD-Eintrag

ord-d4044127998548c698cb29c9f07ac67e

Quelldatensatz

uspto-grants-2015_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09115107B2