申请人:Sumitomo Chemical Co., Ltd.
公开号:US06340763B1
公开(公告)日:2002-01-22
There is disclosed a process for producing an acid salt of a (Z)-2-aminothiazole compound of the formula (I):
wherein R1 and R2 independently represent an alkyl group having 1 to 5 carbon atoms, Y represents a halogen atom, —OSO3H 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):
wherein R1 and R2 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.
本发明公开了一种制备式(I)的(Z)-2-氨基噻唑化合物的酸盐的方法,其中R1和R2分别表示具有1至5个碳原子的烷基,Y表示卤素原子,—OSO3H或—OPO(OH)2,m表示化学式HY的无机酸的价数,其中Y与上述定义相同,n表示1或2的整数。该方法的特征在于:将式(II)的2-氨基噻唑化合物的酸盐与化学式HY的无机酸反应,其中R1和R2分别表示具有1至5个碳原子的烷基,X表示溴原子或碘原子,波浪线表示该化合物是E和Z异构体的混合物。