Dichloromethane → 3-(2,4-Difluorophenoxy)-5,5-dimethyl-4-(4-(methylsulfonyl)phenyl)-5H-furan-2-one

HRID 1940135Notes

Reaction equation

[CH3:1][C:2]([O:16][C:17](=[O:28])[CH2:18][O:19][C:20]1[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=1[F:27])([CH3:15])[C:3]([C:5]1[CH:10]=[CH:9][C:8]([S:11]([CH3:14])(=[O:13])=[O:12])=[CH:7][CH:6]=1)=O.C1CCN2C(=NCCC2)CC1.ClCCl>C(#N)C>[F:27][C:21]1[CH:22]=[C:23]([F:26])[CH:24]=[CH:25][C:20]=1[O:19][C:18]1[C:17](=[O:28])[O:16][C:2]([CH3:15])([CH3:1])[C:3]=1[C:5]1[CH:10]=[CH:9][C:8]([S:11]([CH3:14])(=[O:13])=[O:12])=[CH:7][CH:6]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of 2-(2,4-difluorophenoxy)acetic acid 2-methyl-1-(4-(methylsulfonyl)phenyl)propan-1-one-2-yl ester (Step 2) (470 mg, 1.14 mmol) in acetonitrile (7 mL) was added DBU (187 μL, 1.25 mmol) and the resulting solution was heated at 50° C. for 20 minutes. After cooling to r.t. dichloromethane was added and the mixture was washed with 1N HCl, brine, filtered over cotton and the solvent evaporated under vacuum. Purification by silica gel chromatography followed by a swish in EtOAc/Et2O afforded 122 mg of the title compound.

Workup

additionwas added
washthe mixture was washed with 1N HCl, brine
filtrationfiltered over cotton
customthe solvent evaporated under vacuum
customPurification by silica gel chromatography

Sources & evidence

ORD record: ord-fffdcbd3b3b54a1ab1fc84e45bb1330c
Source dataset: uspto-grants-1997_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05698584

Reaction notes

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