反应详情

A solution of (2′,6′-dimethylbiphenyl-3-yl)methanol (1.0 g, 4.71 mmol), 5-hydroxyindole (0.63 g, 4.73 mmol) and tributylphosphine (1.5 mL, 6.02 mmol) in tetrahydrofuran (30 mL) was stirred, and 1,1′-(azodicarbonyl)dipiperidine (1.6 g, 6.34 mmol) was added by portions, and the mixture was stirred at room temperature for 18 hr. Diethyl ether (30 mL) was added to the reaction mixture, and the precipitated insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10-1:5) to give the title compound (0.95 g, yield 62%) as a pale-brown oil.

1. filtrationthe precipitated insoluble material was filtered off
2. concentrationthe filtrate was concentrated under reduced pressure
3. customThe residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10-1:5)