反应详情

温度

0 °C

To a solution of the above alcohol (100 mg, 0.305 mmol) in dry tetrahydrofuran (20 ml), was added tributylphosphine (0.11 ml, 0.61 mmol). The mixture was cooled to 0° C. and added 1,1′-(azodicarbonyl)dipiperidine (153 mg, 0.61 mmol), and after 10 min. (4-hydroxy-2-methyl-phenoxy)-acetic acid methyl ester (65 mg, 0.34 mmol) were added. The reaction mixture was stirred for 1.5 hours at 0° C. and then allowed to warm up to ambient temperature overnight. To the reaction mixture was added silica gel Fluka 60 (10 g) and the reaction mixture was evaporated in vacuo. The residue was purified by ISCO combiflash 16 (silica gel, hexane/ethyl acetate 85:15) giving {4-[(Z)-3-(4-fluoro-phenyl)-3-(4-phenylethynyl-phenyl)allyloxy]-2-methyl-phenoxy}-acetic acid methyl ester as an oil.

1. temperatureto warm up to ambient temperature overnight
2. customthe reaction mixture was evaporated in vacuo
3. customThe residue was purified by ISCO combiflash 16 (silica gel, hexane/ethyl acetate 85:15)