PYRIDO-FUSED 4-OXO-4H-BENZOPYRANS, THEIR PREPARATION AND THEIR USE AS ANTIDOTES

摘要

2097922 9210500 PCTABS00013 Disclosed are pyrido-anellated 4-oxo-4H-benzopyrans (I) (in which m = 0, 1 or 2; and R1, R6 and R7 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 or cyclohexenone derivatives as herbicidally active substances and pyrido-anellated 4-oxo-4H-benzopyrans (I') as antidotes.