申请人:American Cyanamid Company
公开号:US04107170A1
公开(公告)日:1978-08-15
An improved method of preparing acid addition salts of dl 6-phenyl-2,3,5,6-tetrahydroimidazo[2,1-b]thiazole (dl-tetramisole) by reacting dl-3-(.beta.-hydroxyphenethyl)-2-iminothiazolidine or an acid-addition salt thereof, with a mixture of concentrated hydrochloric acid and concentrated sulfuric acid to obtain dl 3-(.beta.-chlorophenethyl)-2-iminothiazolidine acid-addition salt, treating this compound with aqueous alkali to obtain dl 6-phenyl-2,3,5,6-tetrahydroimidazo[2,1-b]thiazole free base, and converting the latter compound to dl 6-phenyl-2,3,5,6-tetrahydroimidazo [2,1-b]thiazole acid-addition salts in a highly purified state. The products are useful as anthelmintics.
通过将dl-3-(.beta.-羟基苯乙基)-2-亚氨基噻唑啉或其酸加成盐与浓盐酸和浓硫酸的混合物反应,制备dl 3-(.beta.-氯苯乙基)-2-亚氨基噻唑啉酸加成盐,然后用水溶性碱处理该化合物以获得dl 6-苯基-2,3,5,6-四氢咪唑[2,1-b]噻唑啉的自由碱,最后将后者转化为高度纯化的dl 6-苯基-2,3,5,6-四氢咪唑[2,1-b]噻唑啉酸加成盐。这些产品可用作驱虫剂。