反应详情

温度

60 °C

5.0 g (20.0 mmol) of 4-[(8-hydroxyoctyl)oxy]benzaldehyde, 3.5 g (19.8 mmol) of 3,5-(dimethoxyphenyl)acetonitrile are dissolved in 50 mL of propan-2-ol. The solution is heated to 60° C. and 2.0 mL (2.0 mmol) of a one molar solution of tetrabuthylamoniumhydroxyde in methanol are added drop wise. After 2 h at 60° C., the reaction mixture is cooled to 0° C. The precipitate is filtered off, washed with cold propan-2-ol and recristalized in propan-2-ol. 3.5 g of (2Z)-2-(3,5-dimethoxyphenyl)-3-{4-[(8-hydroxyoctyl)oxy]phenyl}prop-2-enenitrile are obtained as a white solid (42% yield). This material proves chromatographically homogenous and displays spectral characteristics consistent with its assigned structure.

1. temperaturethe reaction mixture is cooled to 0° C
2. filtrationThe precipitate is filtered off
3. washwashed with cold propan-2-ol