Phenylacetic esters, thioesters and amides of the formula ##STR1## wherein R is as defined in the disclosure, process for preparation thereof, herbicidal composition and method for destruction of undesirable weeds. The herbicides comprising the above compounds are capable of selectively controlling undesirable weeds among desirable crop plants.
5-2-chloro-4-trifluoromethylphenoxy)-2-nitro-.alpha.-substituted-acetopheno nes and oxime derivatives thereof represented by the formula ##STR1## wherein R.sup.1 and Y are as defined in the disclosure, process for the preparation thereof, herbicidal composition and method for the destruction of undesirable weeds. The herbicides comprising the above compounds are capable of selectively controlling undesirable weeds among desirable crop plants.
Quinoxaline derivatives and herbicidal composition
申请人:NISSAN CHEMICAL INDUSTRIES LTD.
公开号:EP0046467A1
公开(公告)日:1982-03-03
Quinoxaline derivatives are disclosed having selective herbicidal properties. The compounds of the invention have the general formula:
wherein X represents a halogen atom and R is one of a wide range of possible substituents.
Herbicidal compositions containing these compounds are also described.
本发明公开了具有选择性除草特性的喹喔啉衍生物。本发明的化合物具有通式:
其中 X 代表卤素原子,R 是多种可能的取代基之一。
还描述了含有这些化合物的除草组合物。
Process for preparing alcohols from carboxylic acids and process for preparing carboxylic acids
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0028422A1
公开(公告)日:1981-05-13
An alcohol is produced in a high selectivity with a good yield from the corresponding carboxylic acid by reducing the latter with hydrogen in the presence of a rhenium catalyst in the coexistence of an organic base. An arylacetic acid, which is included in the starting carboxylic acid, can be produced in an excellent yield from the corresponding aryl aldehyde by reacting the latter with carbon monoxide and water in the presence of rhodium or its compound and hydrogen iodide.
Diphenyl sulfone compounds, and their production and use
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0090870A1
公开(公告)日:1983-10-12
A compound of the formula:
wherein R is a hydrogen atom or a lower alkoxy group and X and Y are, same or different, each a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a carboxy(lower)alkoxy group or a lower alkoxycarbonyl (lower)alkoxy group, which is useful as a herbicide.
式的化合物:
其中 R 是氢原子或低级烷氧基,X 和 Y 相同或不同,各自是氢原子、卤素原子、低级烷基、低级烷氧基、羧基(低级)烷氧基或低级烷氧基羰基(低级)烷氧基,可用作除草剂。