Lei Lian,Yurong Zheng,Song Li,Xuegang Peng,Tao Jin,Qi Cui
申请号：
US15562633
公开号：
US20180086738A1
申请日:
2016.03.04
申请国别(地区):
US
年份:
2018
代理人:
摘要：
Disclosed are a pyrazole compound or a salt thereof, a preparation method therefor, a herbicidal composition and use thereof. The pyrazole compound or a salt thereof has a structure as shown in formula (I):wherein, R representswherein, R′, R″, and R′″ represent hydrogen, C1-C4 alkyl, C1-C4 halogenated alkyl, C1-C4 alkoxy or halogen, R′, R″, and R′″ may be the same or different； R1 represents C1-C3 alkyl； R2 represents hydrogen or C1-C4 alkyl； R3 represents hydrogen or C1-C6 alkyl, optionally substituted phenyl, optionally substituted pyridyl, optionally substituted alkenyl, optionally substituted alkynyl, C1-C6 alkyl carbonyl, C1-C6 alkoxyl carbonyl, C1-C6 alkyl carbonyl methyl, etc. A compound having a pyrazole structure not only has excellent herbicidal effect on barnyard grass, but also is safe to rice in post-emergence application. More surprisingly, it also has good control efficacy on barnyard grass resistant to major herbicides, such as penoxsulam, quinclorac, cyhalofop-butyl, propanil, etc.
