Lei LIAN,Yurong ZHENG,Bin HE,Xuegang PENG,Tao JIN,Qi CUI
申请号：
US15559614
公开号：
US20180055054A1
申请日:
2016.01.08
申请国别(地区):
US
年份:
2018
代理人:
摘要：
The present invention belongs to the field of pesticides, particularly relates to a pyrazolone compound or a salt thereof, a preparation method therefor, a herbicidal composition and use thereof. The pyrazolone compound is as described in formula I:In the formula, R1R2N represents substituted or unsubstituted 3-8 membered nitrogen-containing heterocyclic group containing 1-3 heteroatoms or R1 and R2 each represent hydrogen or C1-8 alkyl R3 represents hydrogen, C1-4 alkyl, alkenyl, alkynyl, unsubstituted C3-6 cycloalkyl or C3-6 cycloalkyl substituted by C1-4 alkyl R4 represents methyl, ethyl, n-propyl, isopropyl or cyclopropyl X represents hydrogen, —S(O)nR6, —R7 or substituted or unsubstituted 3-8 membered heterocyclic group containing 1-4 heteroatoms, wherein, n represents 1, 2 or 3, R6 represents substituted or unsubstituted alkyl or aryl, and R7 represents substituted or unsubstituted alkyl, aryl, alkyl acyl or aroyl. The active substance of the invention exhibits good herbicidal effect, and is convenient to use, low in cost and has great commercial value.
