[EN] 2-AMINO-4-OXO-4H-BENZOPYRANS, A METHOD FOR PREPARING THEM, AND THEIR USE AS ANTIDOTES
申请人:——
公开号:WO1992010489A1
公开(公告)日:1992-06-25
[FR] 2-amino-4-oxo-4H-benzopyrannes (I) (m = 0, 1 ou 2; R1-R4 ont la signification donnée dans la description) ainsi que les sels de (I), et herbicides renfermant des dérivés de l'acide 2-(4-hétéroaryloxy)- et 2-(4-aryloxy)-phénoxyacétique et/ou des dérivés de cyclohexénone comme matières actives herbicides et les 2-amino-4-oxo-4H-benzopyrannes (I') comme antidotes.
[EN] Disclosed are 2-amino-4-oxo-4H-benzopyrans (I) (in which m = 0, 1 or 2; and R?1 to R?4 are as defined in the description), as well as salts of compound (I), and herbicides containing the 2-(4-heteroaryloxy)- and 2-(4-aryloxy) phenoxyacetic acid derivatives and/or cyclohexenone derivatives as herbicidally active substances, and 2-amino-4-oxo-4H-benzopyrans (I') as antidotes.