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US 4,537,623 AGranted
Herbicidal 2-(oxa or thia heterocycle)5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofurans
AssigneeChevron Research Company
InventorCarl E. Ward
Life of this patent
Estimating the term…
Abstract
Herbicidal 2-(oxaheterocycle or thiaheterocycle)-5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofurans and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.
Claims35
A compound having the formula:
- ##STR6## wherein R.sup.1 and R.sup.2 are independently hydrogen, lower alkyl having 1 through 4 carbon atoms or alkenyl having 3 through 6 carbon atoms;
- R.sup.3 is hydrogen, lower alkyl, lower alkoxy, halo, or trifluoromethyl and can be at any available position on the phenyl ring;
- R.sup.4 is lower alkyl, lower alkoxy, halo, or trifluoromethyl;
- Z is a saturated or unsaturated sulfur or oxygen heterocycle radical having 5 or 6 ring atoms one of which is sulfur or oxygen and the remainder of which are carbon atoms;
- and compatible cation salts thereof.
2 more elements
Dependencies are inferred from the claim text.