1, the temperature should be controlled at 20 ℃, if necessary, can be cooled with ice water.

2, dropwise addition of acetaldehyde solution should be added quickly.

3, the reaction should be stirred quickly. Cinnamaldehyde (English: Cinnamaldehyde) is an aldehyde organic compounds, yellow viscous liquid, a large number of plants such as cinnamon in the body, the natural existence of cinnamaldehyde in nature are trans structure, the molecule is an acrolein connected to a phenyl, can be considered an acrolein derivative.