Ethyl Acetate → HCID 58910060, compound

Participants

Reaction Conditions

Reaction Steps

Tributyl(1-ethoxyvinyl)tin (7.77 g, 21.52 mmol) and Pd(PPh3)4 (1.18 g, 1.02 mmol) were added to a solution of the 5-bromo-1-(tert-butyl)-3-ethoxy-2-(methoxymethoxy)benzene (6.5 g, 20.4 mmol) in toluene (68 ml) and the mixture was stirred at 100° C. for 18 hours. The reaction mixture was cooled to room temperature, ethyl acetate was added, the mixture was washed with 20% aqueous KF and filtered through celite, and the organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. A 1 N HCl aqueous solution (15 ml) was added to a solution of the residue in methanol (80 ml), and the mixture was stirred at room temperature for 2 hours. Saturated sodium hydrogencarbonate solution was added to be basic and extraction was performed with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (solvent: n-hexane-ethyl acetate) to yield the title compound (3.17 g) as colorless crystals.

Provenance & Evidence