反应详情

A solution of methyl (Z)-[2-methyl-4-[3-(4-iodophenyl)-3-(4-methylphenyl)]allyloxy]-phenoxy]acetate (310 mg, 0.587 mmol; example 3) in a mixture of tetrahydrofuran (9 mL) and triethylamine (9 mL) was degassed and 2-ethynylpyridine (121 mg, 1.17 mmol) was added in argon atmosphere. The solution was cooled down; tetrakis(triphenylphosphine)palladium (55 mg, 0.047 mmol) and copper(I) iodide (17.8 mg, 0.094 mmol) were added. The reaction mixture was stirred at ambient temperature for 48 h, then evaporated in vacuo and the residue was dissolved in ethyl acetate (20 mL). The solution was washed with water (3×15 mL), dried with anhydrous magnesium sulphate and evaporated in vacuo. The residue was purified by flash column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 7:3) yielding methyl (Z)-[2-methyl-4-[3-(4-methylphenyl)-3-[4-(pyridin-2-ylethynyl)phenyl]allyloxy]-phenoxy]acetate.

1. customwas degassed
2. temperatureThe solution was cooled down
3. customevaporated in vacuo
4. dissolutionthe residue was dissolved in ethyl acetate (20 mL)
5. washThe solution was washed with water (3×15 mL)
6. dry with materialdried with anhydrous magnesium sulphate
7. customevaporated in vacuo
8. customThe residue was purified by flash column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 7:3)