PYRIDINE RING-SUBSTITUTED PYRIDAZINOL COMPOUNDS AND DERIVATIVES, PREPARATION METHODS, HERBICIDAL COMPOSITIONS AND APPLICATIONS THEREOF
申请人:Qingdao Kingagroot Chemical Compound Co., Ltd.
公开号:US20210032229A1
公开(公告)日:2021-02-04
The invention belongs to the technical field of agricultural chemicals, and in particular relates to a pyridine ring-substituted pyridazinol compound and a derivatives thereof, preparation method, herbicidal composition and application thereof. The compound is as shown in Formula I:
wherein, X is halogen, cyano, alkyl, halogenated alkyl, alkoxy, halogenated alkoxy, R
1
R
2
N—(C═O)—, R
1
R
2
N—, hydroxy, or unsubstituted or substituted aryl; Y is independently selected from hydrogen, halogen, cyano, nitro, R—O—(CH
2
)
n
—, and R
1
R
2
R
3
SiO—, etc.; r is an integer from 0 to 4, m is 0 or 1, n and q are independently an integer from 0 to 8, p is an integer from 1 to 8; R is hydrogen, or a halogen-containing or not containing group selected from alkyl, alkenyl, alkynyl, and cycloalkyl, etc.; R
1
, R
2
, R
3
are each independently hydrogen, nitro, or hydroxy, etc. The compound and the derivative, as well as the composition thereof have very high herbicidal activity and good selectivity, and are safe for crops.