Potassium Carbonate → 5-[4-Difluoromethoxy-2-(3-hydroxy-2,2-dimethyl-propoxy)-3-methoxy-phenyl]-3H-isobenzofuran-1-one

HRID 2171084Notes

Reaction equation

[F:1][CH:2]([F:23])[O:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[CH:11]=[C:12]3[C:16](=[CH:17][CH:18]=2)[C:15](=[O:19])[O:14][CH2:13]3)=[C:6]([OH:20])[C:5]=1[O:21][CH3:22].C(=O)([O-])[O-].[K+].[K+].Br[CH2:31][C:32]([CH3:36])([CH3:35])[CH2:33][OH:34]>C(#N)C>[F:23][CH:2]([F:1])[O:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]2[CH:11]=[C:12]3[C:16](=[CH:17][CH:18]=2)[C:15](=[O:19])[O:14][CH2:13]3)=[C:6]([O:20][CH2:31][C:32]([CH3:36])([CH3:35])[CH2:33][OH:34])[C:5]=1[O:21][CH3:22]

Participants

Conditions

Temperature: 80 °C

Procedure

To a stirring solution of 5-(4-(difluoromethoxy)-2-hydroxy-3-methoxyphenyl)isobenzofuran-1(3H)-one (100 mg, 0.31 mmol) in acetonitrile (10 mL) was added potassium carbonate (128 mg, 0.930 mmol) and 3-bromo-2,2-dimethyl-propan-1-ol (155 mg, 0.930 mmol) and the resultant reaction mixture was heated to 80° C. for 16 h. The reaction mixture was cooled to RT, filtered through celite and the filtrate was concentrated under reduced pressure. The residue was purified by prep TLC to afford title compound as a solid (10 mg, 8%).

Workup

customthe resultant reaction mixture
temperatureThe reaction mixture was cooled to RT
filtrationfiltered through celite
concentrationthe filtrate was concentrated under reduced pressure
customThe residue was purified by prep TLC

Sources & evidence

ORD record: ord-1d790113a8274471a82cd275c70cb68e
Source dataset: uspto-grants-2015_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09051290B2

Reaction notes

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