R-TYPE PYRIDYLOXYCARBOXYLIC ACID, SALT AND ESTER DERIVATIVE THEREOF, AND PREPARATION METHOD THEREFOR, AND HERBICIDAL COMPOSITION AND APPLICATION THEREOF
申请人:Qingdao KingAgroot Chemical Compound Co., Ltd.
公开号:EP3904341A1
公开(公告)日:2021-11-03
The invention relates to the field of pesticide technology, and in particular to a type of R-pyridyloxycarboxylic acid and salt, ester derivative, preparation method, herbicidal composition and application thereof. The R-pyridyloxycarboxylic acid is represented by formula I,
wherein, A, B each independently represent halogen, alkyl or cycloalkyl with or without halogen; C represents hydrogen, halogen, alkyl, haloalkyl; Q represents halogen, cyano, cyanoalkyl and the like; Y represents nitro or NR1R2; the salt is metal salt, amine salt, sulfonium salt, phosphonium salt; the ester is
wherein, X represents O or S; M represents alkyl, alkenyl, alkynyl and the like with or without halogen. The compound has excellent herbicidal activity and higher crop safety, especially good selectivity for key crops such as rice.
本发明涉及农药技术领域,尤其涉及一种R-吡啶氧羧酸及其盐、酯衍生物、制备方法、除草组合物和应用。R-吡啶氧羧酸由式 I 表示、
其中,A、B 各自独立地代表卤素、带或不带卤素的烷基或环烷基;C 代表氢、卤素、烷基、卤代烷基;Q 代表卤素、氰基、氰基烷基等;Y 代表硝基或 NR1R2;所述盐为金属盐、胺盐、锍盐、鏻盐;所述酯为
其中,X 代表 O 或 S;M 代表烷基、烯基、炔基等,可带或不带卤素。该化合物具有优异的除草活性和较高的作物安全性,特别是对水稻等主要作物具有良好的选择性。