Hydrochloric Acid → 3-[(1E)-3-ethoxy-3-oxoprop-1-en-1-yl]benzoic acid

HRID 1049415Notes

Reaction equation

I[C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6].[C:11]([O:15][CH2:16][CH3:17])(=[O:14])[CH:12]=[CH2:13].C(N(CC)CC)C.Cl>CN(C=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH2:16]([O:15][C:11](=[O:14])/[CH:12]=[CH:13]/[C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6])[CH3:17]

Participants

Conditions

Temperature: 140 °C

Procedure

Under an argon atmosphere, to a solution of 3-iodobenzoic acid (20.2 g) in DMF (130 mL) were added ethyl acrylate (9.00 g), triethylamine (24 mL) and palladium (II) acetate (92 mg), and the mixture was stirred at 140° C. for 3 hr. The reaction mixture was cooled to room temperature, and 1N hydrochloric acid was added. The reaction mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (18.7 g) as an orange amorphous solid.

Workup

temperatureThe reaction mixture was cooled to room temperature
extractionThe reaction mixture was extracted with ethyl acetate
washThe extract was washed with water and saturated brine
dry with materialdried over anhydrous magnesium sulfate
customThe solvent was evaporated under reduced pressure
customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record: ord-65885fc2b90f40a78bc3f45896a258d5
Source dataset: uspto-grants-2016_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09382188B2

Reaction notes

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