反应详情

3-methoxybenzaldehyde (2.20 ml, 18.08 mmol), 1-bromo-3-methoxybenzene (2.52 ml, 19.89 mmol), and n-butyl lithium (7.96 ml, 19.89 mmol) were treated in the same manner as described above for the synthesis of 3-(3,5-dimethoxy-phenyl)-3-(3-methoxy-phenyl)-acrylonitrile. The crude was purified via flash column chromatography (10% EtOAc in hexane gradient to 25% EtOAc in hexane in about 40 min.) to give bis-(3-methoxy-phenyl)-methanol as a light yellow oil (4.45 g, 100%): 1HNMR (CDCl3) 7.28-7.21 (m, 2H, Ar), 6.96-6.94 (m, 4H, Ar), 6.82-6.78 (m, 2H, Ar), 5.78 (d, J=3 Hz, 1H, CHOH), 3.78 (s, 6H, 2OCH3 groups), 2.25 (d, J=3 Hz, 1H, OH). The product was carried over to the next step.

1. customThe crude was purified via flash column chromatography (10% EtOAc in hexane gradient to 25% EtOAc in hexane in about 40 min.)