Herbicidal 5-amino-3-oxo-4-(substituted-phenyl)-2,3-dihydrofuran

Claim 1

A compound having the formula: ##STR13## wherein R is phenyl, naphth-1-yl, inden-1-yl; 4-fluorophenyl; or R is a substituted aryl selected from the group having the formulas: ##STR14## wherein one, two or three of R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 are independently selected from the group of lower alkyl, lower alkoxy, halo, nitro, or haloalkyl having 1 through 3 carbon atoms and 1 through 3 of the same or different halo atoms, and the remainder are hydrogen; R 1 is hydrogen or alkyl having 1 through 4 carbon atoms; R 2 is hydrogen, alkyl having 1 through 4 carbon atoms, alkenyl having 3 or 4 carbon atoms, lower alkoxycarbonylalkyl, lower alkoxyalkyl or lower alkylthioalkyl; R 1 and R 2 together with the nitrogen atom to which they are joined form a saturated or unsaturated nitrogen heterocycle having 5 or 6 ring atoms one of which is nitrogen and the remainder are carbon atoms; X is hydrogen, lower alkyl, lower alkoxy, halo, or trifluoromethyl and can be at any available position on the phenyl ring; and Y is cyano; nitro; alkoxycarbonyl having 2 through 9 carbon atoms; cyclopentyloxycarbonyl; cyclohexyloxycarbonyl; phenoxycarbonyl; substituted phenoxycarbonyl having 1 or 2 substituents independently selected from the group of lower alkyl having 1 through 6 carbon atoms, lower alkoxy having 1 through 6 carbon atoms, halo, haloalkyl having 1 through 3 carbon atoms and 1 through 4 of the same or different halo atoms, nitro or cyano; alkylthiocarbonyl having 2 through 9 carbon atoms, or ##STR15## wherein R 10 and R 11 are independently hydrogen or alkyl having 1 through 8 carbon atoms; and compatible salts thereof.