“苯基苯”造句
2024年06月13日 22:11:20
方法: 以甲醇为溶剂,以对羟基苯乙酮和溴为原料制备了α - 溴-4-苄氧
苯基苯乙酮.
Methods: α - Bromo - 4 - benzyloxy acetophenone is synthesized with 4 - hydroxy acetophenone and bromonium as materials and methanol as solvent.
目的探讨西替利嗪的中间体1-犤 ( 4- 氯苯基 ) 苯甲基 犦 - 哌嗪的合成方法的改进.
Objective To study improved synthetic method of 1 - [ ( 4 - chlorophenyl ) phenylmethyl ] - piperazine, the intermediate of cetirizine hydrochloride.