Triketone derivatives
AssigneeIdemitsu Kosan Co., Ltd.
InventorsKazufumi Nakamura, Mitsuru Shibata, Kazuyoshi Koike
Life of this patent
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Abstract
A triketone compound of the following formula: ##STR1## wherein Y.sup.1 is C.sub.1 to C.sub.4 alkyl, a halogen or a C.sub.1 to C.sub.4 haloalkyl; each of Y.sup.2 and Y.sup.3 is independently C.sub.1 to C.sub.4 alkyl; Y.sup.4 is hydrogen, C.sub.1 to C.sub.4 alkyl or a halogen; n is 0, 1 or 2; p is 0 or 1; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen, C.sub.1 to C.sub.4 alkyl or phenyl; or when p is 1, either R.sup.1 or R.sup.2 and either R.sup.3 or R.sup.4 optionally bond to each other to form an intramolecular double bond; and X is oxygen or sulfur. The triketone compound is useful as a herbicide to control a broad range of upland weeds at a low dosage without causing phytotoxicity on corn.
Claims16
A triketone compound of the formula (I) ##STR26## wherein Y.sup.1 is a C.sub.1 to C.sub.4 alkyl group, a halogen atom or a C.sub.1 to C.sub.4 haloalkyl group,
- each of Y.sup.2 and Y.sup.3 is independently a C.sub.1 to C.sub.4 alkyl group,
- Y.sup.4 is a hydrogen atom, a C.sub.1 to C.sub.4 alkyl group or a halogen atom,
- n is an integer of 0, 1 or 2,
- p is 0 or 1,
- each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently a hydrogen atom, a C.sub.1 to C.sub.4 alkyl group or a phenyl group, or when p is 1, either R.sup.1 or R.sup.2 and either R.sup.3 or R.sup.4 optionally bond to each other to form an intramolecular double bond, and
- X is an oxygen atom or a sulfur atom.
Dependencies are inferred from the claim text.