761-21-7Relevant academic research and scientific papers
A preparation method of promethazine hydrochloride (by machine translation)
-
Paragraph 0022; 0023; 0024, (2017/06/02)
The invention discloses a method for preparation of promethazine hydrochloride, to diethyl amine and the epoxy propane to obtain the 1 - diethyl amino - 2 - propanol, then 1 - diethyl amino - 2 - propanol adds the chlorination sulfoxide, toluene to obtain the 1 - diethyl amino - 2 - chloro propane, and then the phenothiazine to obtain the ine crude free body, ine the crude free acceptor promethazine purified crude free acceptor with the hydrochloric acid salt making promethazine hydrochloride. The invention preparation of promethazine hydrochloride good quality, high yield, the preparation method is simple, low energy consumption, low cost. (by machine translation)
