FMC Corporation
Butyrolactones as herbicides

Abstract:

Disclosed are compounds of Formula 1, including all stereoisomers, N-oxides, and salts thereof, ##STR00001## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, Q.sup.1, Q.sup.2, Y.sup.1, and Y.sup.2 are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling undesired vegetation comprising contacting the undesired vegetation or its environment with an effective amount of a compound or a composition of the invention.