Ethanol → Methyl(6-hydroxy-4-vinyl-1-benzothiophen-3-yl)acetate

HRID 591413Notes

Reaction equation

[CH3:1][O:2][C:3](=[O:33])[CH2:4][C:5]1[C:9]2[C:10](OS(C(F)(F)F)(=O)=O)=[CH:11][C:12]([O:14][Si](C(C)C)(C(C)C)C(C)C)=[CH:13][C:8]=2[S:7][CH:6]=1.[CH3:34][CH2:35]O>[Cl-].[Na+].O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH3:1][O:2][C:3](=[O:33])[CH2:4][C:5]1[C:9]2[C:10]([CH:34]=[CH2:35])=[CH:11][C:12]([OH:14])=[CH:13][C:8]=2[S:7][CH:6]=1

Participants

Conditions

Temperature: 110 °C

Procedure

To a mixture of methyl(4-(((trifluoromethyl)sulfonyl)oxy)-6-((triisopropylsilyl)oxy)-1-benzothiophen-3-yl)acetate (900 mg) and EtOH (3 mL) were added potassium vinyl(trifluoro)borate (252 mg), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (140 mg) and TEA (0.476 mL) at room temperature, and the mixture was stirred at 110° C. with microwave irradiation for 15 min. The mixture was poured into brine at room temperature and extracted with EtOAc. The organic layer was separated, washed with brine, and dried over MgSO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography (EtOAc/hexane) to give the title compound (379 mg).

Workup

extractionextracted with EtOAc
customThe organic layer was separated
washwashed with brine
dry with materialdried over MgSO4
concentrationconcentrated in vacuo
customThe residue was purified by silica gel column chromatography (EtOAc/hexane)

Sources & evidence

ORD record: ord-a7aee4c6ed0747a6aa65cb8018c44c45
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09238639B2

Reaction notes

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