摘要
报道一种合成３，５－二苯基吡唑的新方法，以１，３－二苯基－２－丙烯－１－酮为起始原料，经氯化得２，３－二氯－１，３－二苯基－１－丙酮，后者与过量水合肼反应得３，５－二苯基吡哇。两步反应收率约９０％。过量的水合肼可回收套用。
A new method for synthesis of 3,5-diphenylpyrazole is reported. 1,3-diphenyl-2-propen-1-one is used as the starting material to get the intermediate of 2, 3-dichloro-1, 3-diphenyl-1-propanone,which will then react with excessive hydrazine hydrate to get 3,5-diphenylpyrazole. The results show that the new method is of many advantages, such as low reaction temperature, convenient operation and easily obtaining product with high purity etc. The final yield of the two steps reaction is as high as about 90%. Hydrazine hydrate can be recycled.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
1996年第2期134-136,共3页
Journal of Northwest University（Natural Science Edition）
基金
陕西省科委科技攻关项目
关键词
合成
二苯基吡唑
二氯二苯基丙酮
水合肼
synthesis 3 2, 3-dichloro-1, 3-diphenyl-1-propanone
3, 5-diphenylpyrazole
