Tetrahydrophthalamide derivatives, herbicidal compositions and use
AssigneeTakeda Chemical Industries, Ltd.
InventorHiroshi Nagase
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Abstract
Tetrahydrophthalamide derivatives of the general formula: ##STR1## wherein X.sub.1 is hydrogen or halogen; X.sub.2 is halogen, alkoxy or substituted benzyloxy; X.sub.3 is hydrogen, alkoxy or alkenyloxy; R and R' are the same or different alkyl, cycloalkyl, alkenyl or phenyl, each of which may be optionally substituted, or may jointly, together with nitrogen atom adjacent to R and R', form aliphatic heterocyclic ring containing one or two nitrogens or nitrogen and oxygen, which have a herbicidal activity against a broad spectrum of monocotyledonous and dicotyledonous weeds.
Claims23
A tetrahydrophthalamide compound of the formula:
- ##STR46## wherein X.sub.1 is hydrogen or halogen;
- X.sub.2 is halogen, C.sub.1-3 alkoxy or halogen-substituted benzyloxy;
- at least one of X.sub.1 and X.sub.2 is halogen;
- X.sub.3 is hydrogen, C.sub.1-3 alkoxy or alkenyloxy;
- R and R' are the same or different
- (a) alkyl,
- (b) cycloalkyl,
- (c) alkenyl, or
- (d) phenyl,
- each of which may be substituted:
- or R and R' may jointly, together with the nitrogen atom adjacent to R and R', form an aliphatic heterocyclic ring containing one or two nitrogens, or nitrogen and oxygen.
A herbicidal composition which contains as an active ingredient, an effective amount of a tetrahydrophthalamide compound of the formula:
- ##STR47## wherein X.sub.1 is hydrogen or halogen;
- X.sub.2 is halogen, C.sub.1-3 alkoxy or halogen-substituted benzyloxy;
- X.sub.3 is hydrogen, C.sub.1-3 alkoxy or alkenyloxy;
- R and R' are the same or different alkyl, cycloalkyl, alkenyl or phenyl, each of which may be substituted, or R and R' may jointly, together with the nitrogen atom adjacent to R' and R, form an aliphatic heterocyclic ring containing one or two nitrogens, or nitrogen and oxygen, and a suitable carrier therefor.
Dependencies are inferred from the claim text.