中文摘要：

以（4S）-4-苄基-2-噁唑烷酮为手性助剂，与丙酰氯发生N-酰化反应，酰化产物与碘代正丙烷进行不对称烷基化反应。在NaBH4作用下氢解得到（S）-2-甲基-戊醇，再经氧化、格氏加成和氧化等反应，合成了切叶蚁警戒信息素，其化学总产率为30．98％，光学异构体纯度高达94％e．e．

英文摘要：

（4S）-4-benyl-oxazoli-2-one, used as chiral auxiliary, was first N-acylated by propionyl chloride, and asymmetrical alkylated with iodopropane, followed by cleavage using NaBH4 to give （S）-2-methyl-pentanol, which ordinally proceeded oxidation, addition, oxidation, etc to successfully synthesize the alarm pheromone of the leaf-cutting ant. The total enantiomeric exess is over 94%e. e. and the total yield was up to 30.98 %.