Ethyl Acetate → HCID 86715647, compound

Participants

Reaction Steps

Sodium hydride (60% dispersion in mineral oil, 1.75 g, 43.7 mmol) was added in portions over 1 min to an ice-cooled, stirring solution of ethyl 3-oxopentanoate (6.30 g, 43.7 mmol) in dry dimethoxyethane (87 mL). After 5 min, the flask was removed from the cooling bath and stirring continued at room temperature. After 30 min, a solution of 4-(trifluoromethyl)benzyl bromide (10.4 g, 43.7 mmol) in dry dimethoxyethane (10 mL) was added dropwise over 2 min. After 2.5 h, ethyl acetate (300 mL) and water (100 mL) were added. The layers were separated. The organic layer was dried with sodium sulfate and the dried solution was filtered. The filtrate was concentrated and the residue was purified by flash-column chromatography on silica gel eluting with hexanes initially, grading to 50% dichloromethane-hexanes to provide the title compound as a colorless liquid.

Provenance & Evidence