Novel pyrazole derivatives of the formula I:
wherein
R represents a lower alkyl group or a lower alkenyl group atoms which may be substituted by halogen atom,
X represents a halogen atom, a lower alkyl group, nitro group, cyano group, a lower alkylsulfonyl group or trifluoromethyl group,
n is an integer of 2 to 4,
Q represents hydrogen atom; an aralkyl group which may be substituted by halogen atom, nitro group, cyano group or a lower alkyl group; benzenesulfonyl group which may be substituted by a lower alkyl group or halogen atom; benzoyl group which may be substituted by a lower alkyl group or halogen atom; phenacyl group which may be substituted by a lower alkyl group or halogen atom; a lower alkyl group which may be substituted by halogen atom;
a lower alkenyl group which may be substituted by halogen atom; or a lower alkynyl group,
and a method for preparation of said derivatives, a selective berbicidal composition containing said derivatives as active ingredient,
as well as a method for controlling weeds using said derivatives.
式 I 的新型
吡唑衍
生物:
其中
R 代表可被卤素原子取代的低级烷基或低级烯基原子、
X 代表卤素原子、低级烷基、硝基、
氰基、低级烷基磺酰基或三
氟甲基、
n 是 2 至 4 的整数、
Q 代表氢原子;可被卤素原子、硝基、
氰基或低级烷基取代的芳烷基;可被低级烷基或卤素原子取代的苯磺酰基;可被低级烷基或卤素原子取代的苯甲酰基;可被低级烷基或卤素原子取代的苯酰基;可被卤素原子取代的低级烷基;
可被卤原子取代的低级烯基;或低级炔基、
以及制备上述衍
生物的方法,一种含有上述衍
生物作为活性成分的选择性杀虫组合物、
以及使用上述衍
生物控制杂草的方法。