Herbicidal hydantoin derivatives
AssigneesSagami Chemical Research, Kaken Pharmaceutical Co., Ltd., Chisso Corporation
InventorsKenji Hirai, Takamasa Fuchikami, Atsuko Fujita, Hiroaki Hirose, Masahiro Yokota, Shoin Nagato
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Abstract
Novel hydantoin derivative which is represented by the formula: ##STR1## (wherein X and Y represent a halogen atom, R.sup.1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group or an alkynyl group, R.sup.2 represents a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group, and R.sup.3 and R.sup.4 independently represent a hydrogen atom or a lower alkyl group), and a herbicide containing said derivative as effective ingredient. This hydantoin derivative exhibit excellent weed-killing activity for harmful weeds and low phytotoxicity for crop plants.
Claims4
A hydantoin derivative represented by the formula:
- ##STR61## wherein X and Y are independently halogen atoms, R.sup.1 represents a hydrogen atom, a C.sub.3 -C.sub.4 alkenyl group or a C.sub.3 -C.sub.4 alkynyl group, R.sup.2 represents a hydrogen atom, a methyl group or an ethyl group, and R.sup.3 and R.sup.4 independently represent a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group.
A herbicidal composition comprising an agriculturally acceptable carrier an a herbicidally effective amount of a hydantoin derivative represented by the formula:
- ##STR62## wherein x and Y are independently halogen atoms, R.sup.1 represents a hydrogen atom, a C.sub.3 -C.sub.4 alkenyl group or a C.sub.3 -C.sub.4 alkynyl group, R.sup.2 represents a hydrogen atom, a methyl group or an ethyl group, and R.sup.3 and R.sup.4 independently represent a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group.
Dependencies are inferred from the claim text.