以松节油中的α -蒎烯为原料 ,SeO2 为氧化剂 ,无水乙醇为溶剂 ,在回流温度下反应 5h生成桃金娘烯醛 ,产率为 61% ,在 4 30℃ 60kPa下通过黄铜丝床层 0 .3～ 0 .5s异构化反应生成紫苏醛 ,采用亚硫酸氢钠法 ,提纯紫苏醛后用盐酸羟胺进行肟化反应生成紫苏糖 ,总得率大约 2 0 % . Taking α - pinene in turpentine as raw material, SeO2 as oxidant and absolute ethanol as solvent, the reaction was carried out at reflux temperature for 5h to generate myrtenal, with a yield of 61%. The product was passed through a brass wire The isomerization of the bed from 0 .3 ~ 0. 5s to produce perillaldehyde, the use of sodium bisulfite method, purified perillaldehyde with hydroxylamine hydrochloride oximation reaction to generate perilla sugar, the total yield of about 20%.