反应详情

A mixture of 4-fluorobenzaldehyde (25.5 g, 0.220 mol), methyl 3-oxobutanoate (21.80 g, 0.220 mol), and piperidine (1.0 mL) in anhydrous benzene (250 mL) was stirred for 10 minutes at room temperature and subsequently refluxed overnight in a Dean-Stark apparatus. The reaction mixture was then cooled to room temperature and the solvent was removed in vacuo to afford methyl (2Z)-2-acetyl-3-(4-fluorophenyl)-2-propenoate as a black solid (48.6 g, 99%), which was used for next step without purification.

1. temperatureThe reaction mixture was then cooled to room temperature
2. customthe solvent was removed in vacuo