乙酐脱水法合成肉桂腈研究

Synthesis of Cinnamonitrile by Acetic Anhydride Dehydration Method

以肉桂醛为原料 ,在 5 0 %的乙醇水溶液中制备肉桂醛肟 ,然后用乙酐在 12 4～ 12 6℃温度条件下脱水1h生成肉桂腈 ,产率达 90 .3%。

Cinncimaldehydeoxime was prepared from cinnamaldehyde in the 50 % solution of ehtanol. Cinnamonitrile was formed by the dehydration of cinnamaldehydeoxime with the acetic anhydride. The temperature of the reaction was 124~126℃ and the time was 1 h. The productive rate was up to 90.3 %.