(4-Iodo-pyridin-3-YL)-carbamic acid tert-butyl ester → {4-[6-(3-[1,3]Dioxan-2-ylphenyl)-4-hydroxy-6-methyl-4-trifluoromethylhept-1-ynyl]pyridin-3-yl}carbamic acid tert-butyl ester

Participants

Reaction Steps

A mixture of 6-(3-[1,3]dioxan-2-ylphenyl)-6-methyl-4-trifluoromethylhept-1-yn-4-ol (300 mg, 0.84 mmol), (4-iodopyridin-3-yl)carbamic acid tert-butyl ester (270 mg, 0.84 mmol), bis(triphenylphosphine)palladium(II) chloride catalyst (29.6 mg, 0.04 mmol) and copper (I) iodide (16 mg, 0.08 mmol) in 4 mL of anhydrous triethylamine and 1 mL of anhydrous DMF was stirred at room temperature for 12 hours. The reaction mixture was then diluted with 30 nL of diethyl ether and washed with 20 mL of aqueous saturated ammonium chloride solution and 20 mL of brine. The organic layer was dried over magnesium sulfate and concentrated in vacuo. Column chromatography over silica gel with hexanes-ethyl acetate (5:1 to 1:1) provided 250 mg of the title compound as a foam (54% yield).

Provenance & Evidence