反应详情

温度

50 °C

Methyl (Z)-[4-[3-(4-bromophenyl)-3-iodoallyloxy]-2-methylphenoxy]acetate (760 mg, 1.47 mmol) and (benzo[b]thiophen-2-yl)-tributyltin (0.72 g, 1.7 mmol) were dissolved in anhydrous N,N-dimethylformamide (20 mL) and the solution was degassed. 0.15 M solution of tri-t-butylphosphine in cyclohexane (1.2 mL, 0.18 mmol) and tris(dibenzylidenacetone)dipalladium chloroform complex (46 mg, 0.044 mmol) were added; the reaction solution was degassed again and then stirred under inert atmosphere at 50° C. for 2 h. The reaction mixture was diluted with ethyl acetate (50 mL) and extracted with 10% aqueous solution of potassium fluoride (50 mL), water (2×50 mL) and brine (2×30 mL). The organic layer was dried with anhydrous magnesium sulfate and evaporated in vacuo. The residue was purified by column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 95:5-90:10) yielding methyl (Z)-[4-[3-(benzo[b]thiophen-2-yl)-3-(4-bromophenyl)allyloxy]-2-methylphenoxy]acetate.

1. customthe solution was degassed
2. customthe reaction solution was degassed again
3. additionThe reaction mixture was diluted with ethyl acetate (50 mL)
4. extractionextracted with 10% aqueous solution of potassium fluoride (50 mL), water (2×50 mL) and brine (2×30 mL)
5. dry with materialThe organic layer was dried with anhydrous magnesium sulfate
6. customevaporated in vacuo
7. customThe residue was purified by column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 95:5-90:10)