反应详情

温度

91 °C

A solution of 8-bromo-6-methoxy-4,4-dimethyl-3,4-dihydro-2H-naphthalen-1-one (Intermediate 154, 2.83 g, 10 mmol) and tributyl(vinyl)tin (3 mL, 10 mmol) in anhydrous N,N-dimethyl formamide (30 mL) was sparged with argon and treated with tetrakis(triphenylphosphine)palladium (0) (0.3 g, 0.26 mmol). The resulting reaction mixture was heated to 91° C. for two days at the end of which it was cooled to ambient temperature, diluted with water and extracted with diethyl ether (×2). The combined organic phase was washed with water (×1), and brine (×1), dried over anhydrous magnesium sulfate, filtered and evaporated to a pale yellow oil. Flash chromatography using 15% ethyl acetate in hexane as the eluent afforded the title product (1.7 g, 73%) as a pale yellow oil.

1. customThe resulting reaction mixture
2. temperaturewas cooled to ambient temperature
3. extractionextracted with diethyl ether (×2)
4. washThe combined organic phase was washed with water (×1), and brine (×1)
5. dry with materialdried over anhydrous magnesium sulfate
6. filtrationfiltered
7. customevaporated to a pale yellow oil