反应详情

A solution of 19.7 g of p-benzyloxycinnamaldehyde and 27.6 g of acetylmethylenetriphenylphosphorane in 190 ml of xylene was heated under reflux for 2 hours, the solvent was then evaporated and the residual crystals were recrystallized from benzene to give 18.3 g of the desired compound melting at 132°-133° C.

1. temperatureunder reflux for 2 hours
2. customthe solvent was then evaporated
3. customthe residual crystals were recrystallized from benzene