申请人:Sumitomo Chemical Co., Ltd.
公开号:US20020058818A1
公开(公告)日:2002-05-16
There is disclosed a process for producing an acid salt of a (Z)-2-aminothiazole compound of the formula (I):
1
wherein R
1
and R
2
independently represent an alkyl group having 1 to 5 carbon atoms, Y represents a halogen atom, —OSO
3
H or —OPO(OH)
2
,
m indicates the valence number of an inorganic acid of the formula: HY wherein Y represents the same as defined above, and
n indicates an integer of 1 or 2,
which process is characterized by:
reacting an acid salt of a 2-aminothiazole compound of the formula (II):
2
wherein R
1
and R
2
independently represent an alkyl group having 1 to 5 carbon atoms, X represents a bromine atom or an iodine atom, and the wavy line means that this compound is a mixture of the E- and Z-isomers, with the inorganic acid of the formula HY.
本发明公开了一种生产式(I)的(Z)-2-氨基噻唑化合物酸盐的工艺:
1
其中 R
1
和 R
2
分别代表具有 1 至 5 个碳原子的烷基,Y 代表卤素原子、-OSO
3
H或-OPO(OH)
2
,
m 表示式中无机酸的价数:HY 其中 Y 代表与上述定义相同的元素,以及
n 表示 1 或 2 的整数、
该工艺的特点是
使式 (II) 的 2-氨基噻唑化合物的酸盐反应:
2
其中 R
1
和 R
2
分别代表具有 1 至 5 个碳原子的烷基,X 代表溴原子或碘原子,波浪线表示该化合物是 E 型和 Z 型异构体与 HY 型无机酸的混合物。