1.METHODS Terazosin hydrochloride was synthesized from anhydro-piperazine via acylation,reduction,amination,salification etc.
方法以无水哌嗪为起始原料,经酰化、还原、胺化、盐等反应制得盐酸特拉唑嗪。
2.METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.