There are disclosed halogeno-4-methylpyrazoles represented by the formula (I):
wherein R represents an alkyl group having 1 to 4 carbon atoms, a substituted or unsubstituted phenyl group or a substituted or unsubstituted pyridyl group; X represents a hydrogen atom or a halogen atom; and Y represents a halogen atom, and a process for preparing the same which comprises reacting 1-substituted-4-methylpyrazoles of the formula (II):
wherein R has the same meaning as defined above, with a halogen.
本发明公开了由式(I)代表的卤代-
4-甲基吡唑:
其中 R 代表具有 1 至 4 个碳原子的烷基、取代或未取代的苯基或取代或未取代的
吡啶基;X 代表氢原子或卤素原子;Y 代表卤素原子,以及制备卤代-
4-甲基吡唑的工艺,该工艺包括使式(II)的 1-取代-
4-甲基吡唑与卤素反应:
其中 R 的含义与上述定义相同,与卤素反应。