Cyanbenzofuran derivatives, processes for their preparation and their use in herbicidal compositions; cyanobenzene, benzodioxepine, benzodioxaphosphepine and benzodioxathiepine derivatives
申请人:FBC LIMITED
公开号:EP0007719A2
公开(公告)日:1980-02-06
The invention provides herbicidally-active 2,3-dihydro-5-cyano-benzofurans of the formula:
(wherein: R' and R2 together represent =O or R' represents hydrogen and R2 represents hydrogen, hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, alkylthiocarbonyloxy, halogen, isothiocyanato, amino, alkylamino, dialkylamino, arylamino, acylamino, alkoxycarbonylamino, alkyhhiocarbonylamino. N-bonded heterocyclyl, cyano or alkylthio; R3 and R4 together represent alkylene or each represent hydrogen or alkyl; and R5, R6 and R7, which may be the same or different, each represent hydrogen, halogen, alkyl, alkoxy, acyl or cyano), processes for their preparation and herbicidal compositions containing them.
本发明提供了具有除草活性的 2,3-二氢-5-氰基苯并呋喃,其化学式为
其中R'和R2一起代表=O或R'代表氢,R2代表氢、羟基、烷氧基、酰氧基、烷氧基羰氧基、烷硫基羰氧基、卤素、异硫氰基、氨基、烷基氨基、二烷基氨基、芳基氨基、酰氨基、烷氧基羰基氨基、烷硫基羰基氨基。R3和R4共同代表亚烷基或各自代表氢或烷基;R5、R6和R7可以相同或不同,各自代表氢、卤素、烷基、烷氧基、酰基或氰基),以及它们的制备方法和含有它们的除草组合物。