3-Phenylprop-2-En-1-Ol → (3-Phenyl-2-propene-1-yl) 4,4-dimethoxy-3-oxobutyrate

Participants

Reaction Steps

2.68 g (14.1 mmol) of ethyl 4,4-dimethoxy-3-oxobutyrate, 5.14 ml (40.0 mmol) of cinnamyl alcohol and 244 mg (2.0 mmol) of 4-dimethylaminopyridine were heated under reflux in 40 ml of toluene for two nights. A phosphate buffer solution was added to the reaction liquid. After the extraction with ethyl acetate, the organic layer was washed with a saturated aqueous salt solution and then dried over anhydrous sodium sulfate. The solvent was distilled under reduced pressure, and the residue was purified by the silica gel chromatography (hexane/ethyl acetate=9/1) to obtain the title compound.

Provenance & Evidence