Tetrahydrofuran → {(S)-6-[(R)-4-Formyl-5-trifluoromethyl-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester

HRID 2406546Notes

Reaction equation

[CH3:1][O:2][C:3](=[O:30])[CH2:4][C@H:5]1[C:9]2[CH:10]=[CH:11][C:12]([O:14][C@H:15]3[C:23]4[C:18](=[C:19]([CH:28]=C)[C:20]([C:24]([F:27])([F:26])[F:25])=[CH:21][CH:22]=4)[CH2:17][CH2:16]3)=[CH:13][C:8]=2[O:7][CH2:6]1.[O:31]1CCCC1>O=[Os](=O)(=O)=O.O>[CH3:1][O:2][C:3](=[O:30])[CH2:4][C@H:5]1[C:9]2[CH:10]=[CH:11][C:12]([O:14][C@H:15]3[C:23]4[C:18](=[C:19]([CH:28]=[O:31])[C:20]([C:24]([F:26])([F:27])[F:25])=[CH:21][CH:22]=4)[CH2:17][CH2:16]3)=[CH:13][C:8]=2[O:7][CH2:6]1

Participants

Conditions

Temperature: 50 °C

Procedure

NaIO4 (1.80 g) and OsO4 (4% in water, 50 μL) are added to a mixture of {(S)-6-[(R)-5-trifluoromethyl-4-vinyl-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester (1.25 g), tetrahydrofuran (16 mL), and water (4 mL) at room temperature. The mixture is stirred at 50° C. overnight. After cooling to room temperature, water is added and the mixture is extracted with ethyl acetate. The combined extract is washed with brine, dried (Na2SO4), and concentrated. The residue is chromatographed on silica gel (cyclohexane/ethyl acetate) to give the title compound. LC (method 2): tR=1.19 min; Mass spectrum (ESI+): m/z=421 [M+H]+.

Workup

temperatureAfter cooling to room temperature
extractionthe mixture is extracted with ethyl acetate
extractionThe combined extract
washis washed with brine
dry with materialdried (Na2SO4)
concentrationconcentrated
customThe residue is chromatographed on silica gel (cyclohexane/ethyl acetate)

Sources & evidence

ORD record: ord-f30b052f1b33478d80f40cf9e67f933e
Source dataset: uspto-grants-2014_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08809376B2

Reaction notes

Loading…