tert-Butanol → HCID 68782740, compound

Participants

Reaction Steps

A suspension of potassium tert-butoxide (3.2 g) in anhydrous tetrahydrofuran (40 mL) at 0° C. was treated with a mixture of tert-butanol (0.15 mL) and 3-oxopentanoic acid methyl ester (3.8 g). The mixture was warmed to room temperature over 30 minutes and then a solution of 1-bromomethyl-2,4-difluorobenzene (6.0 g) in tetrahydrofuran (10 mL) was added and the resulting mixture stirred at room temperature for 72 hours. The mixture was diluted with water (10 mL) and the tetrahydrofuran removed under reduced pressure. The residue was partitioned between ethyl acetate and dilute aqueous ammonium chloride solution and the aqueous phase extracted with diethyl ether. The combined organic phases were dried over magnesium sulfate and the solvent removed under reduced pressure. The residue was purified by column chromatography on silica gel, eluting with a mixture of toluene, dichloromethane and ethyl acetate (4:1:0 to 0:1:0 to 0:25:1 by volume) to afford title compound as colourless oil, 4.5 g.

Provenance & Evidence