Iodoethane → 5-(4-Difluoromethoxy-2-ethoxy-3-methoxy-phenyl)-3H-isobenzofuran-1-one

HRID 2171081Notes

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+].[CH2:30](I)[CH3:31]>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][CH2:30][CH3:31])[C:5]=1[O:21][CH3:22]

Participants

Conditions

Temperature: 70 °C

Procedure

To a stirring solution of 5-(4-(difluoromethoxy)-2-hydroxy-3-methoxyphenyl)isobenzofuran-1(3H)-one (80 mg, 0.25 mmol) in acetonitrile (10 mL) was added potassium carbonate (103.5 mg, 0.75 mmol) and ethyl iodide (0.1 mL, 0.75 mmol) and the resultant reaction mixture was heated to 70° C. for 3 h. The reaction mixture was cooled to RT, filtered through celite and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, 100-200 mesh, 0-30% ethyl acetate in pet ether) to afford title compound as a solid (50 mg, 58%).

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 column chromatography (silica gel, 100-200 mesh, 0-30% ethyl acetate in pet ether)

Sources & evidence

ORD record: ord-ef13e515eee6421f8e3df57682228caa
Source dataset: uspto-grants-2015_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09051290B2

Reaction notes

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