Process for the preparation of 1,5-disubstituted-3-amino-1,2,4,-triazoles and substituted aminoguanidines as intermediate compounds
申请人:——
公开号:US20040039203A1
公开(公告)日:2004-02-26
New process for the preparation of 1,5-disubstituted-3-amino-1,2,4-triazoles of the general formula (I), wherein the meaning of R is C
1-5
alkyl group; C
3-13
cycloalkyl-C
0-4
alkyl group, optionally substituted by one or more C
1-3
alkyl group; phenyl-C
0-2
alkyl-, (CH
2
)
n
-morpholino-, piperidino-, pyrrolidino- or piperazino-group, optionally substituted by one or more halogen atom, C
1-3
alkyl group, C
1-3
alkoxy group, n is 1-5, R
1
, R
2
, R
3
, and R
4
stand independently for hydrogen, halogen, C
1-6
alkyl group, C
1-3
alkoxy group or trifuluoromethyl group, with the proviso that of the substituents R
1
, R
2
, R
3
, and R
4
at least one stands for hydrogen.
新的制备1,5-二取代-3-氨基-1,2,4-三唑通式(I)的方法,其中R的含义为C1-5烷基;C3-13环烷基-C0-4烷基,可选择地被一个或多个C1-3烷基取代;苯基-C0-2烷基,(CH2)n-吗啉基,哌啶基,吡咯烷基或哌嗪基,可选择地被一个或多个卤原子,C1-3烷基,C1-3烷氧基取代,n为1-5,R1,R2,R3和R4独立地代表氢,卤素,C1-6烷基,C1-3烷氧基或三氟甲基基团,但须满足其中至少一个取代基R1,R2,R3和R4代表氢。