Process for preparing 3,5-dlamfno-1,2,4-triazoles.
3,5-Diamino-1,2,4-triazoles
in which R1 and R2 are each lower alkyl or form part of a pyrrolidinyl, piperidinyl or hexamethyleneiminyl ring; Q is a furan or benzene ring; n is 0 or 1; m is 2 or 3; X is sulphur when n is 1, m is 2, and Q is furan, and X is oxygen when n is 0, m is 3 and Q is benzene; and R3 is hydrogen or lower alkyl are prepared by reacting an O-phenyl isourea
in which Y is phenyl and R1, R2, Q, n, m and X are as defined above, with a hydrazine NH2NHR3 in which R3 is as defined above.
3,5-二
氨基-
1,2,4-三唑的制备工艺。
3,5-Diamino-1,2,4-triazoles
其中 R1 和 R2 各为低级烷基或构成
吡咯烷基、
哌啶基或六亚甲基亚
氨基环的一部分;Q 为
呋喃环或苯环;n 为 0 或 1;m 为 2 或 3;当 n 为 1、m 为 2 和 Q 为
呋喃时,X 为
硫,当 n 为 0、m 为 3 和 Q 为苯时,X 为氧;以及 R3 为氢或低级烷基。
其中 Y 是苯基,R1、R2、Q、n、m 和 X 如上文所定义,与
肼 NH2NHR3 反应,其中 R3 如上文所定义。