| abstract |
COMPOUNDS OF THE FORMULA WHEREIN R1 IS HYDROGEN OR C1-C4 ALKYL; R2 IS HYDROGEN, C1-C4 ALKYL OR RA-O-C-WHEREIN RA IS C1-C4 ALKYL; R1 AND R2 TOGETHER ARE AKLYLENE HAVING 3 TO 6 CARBON ATOMS, R3 IS HYDROGEN OR C1-C4 ALKYL; R4 IS HYDROGEN OR C1-C4 ALKYL; R5 IS HYDROGEN OR C1-C4 ALKYL; R6 IS HYDROGEN OR C1-C4 ALKYL; AND R7 AND R8 INDEPENDENTLY ARE (1) HYDROGEN; (2) HALOGEN; (3) C1-C4 ALKYL; (4) ALKOXY; (5) 0CF3; (6) CYANO; (7) NITRO; (8) C1-C4 HALOALKYL; (9) RBSON-WHEREIN N IS THE INTEGER 0, 1 OR 2; AND RB IS (A) C1-C4 AKLYL; (B) C1-C4 ALKYL SUBSTITUTED WITH HALGEN OR CYANO; (C) PHENYL; OR (D) BENZYL; (10) NRCRD WHERE RC AND RD INDEPENDENTLY ARE HYDROGEN OR C1-C4 ALKYL; (11) REC (0) WHEREIN RE IS C1-C4 OR C1-C4 ALKOXY; OR (12) SO2NRERD WHEREIN RC AND RD ARE AS DEFINED, WITH THE PROVISO THAT R7 IS NOT ATTACHED TO THE 6-POSITION, AND THEIR SALTS ARE EFFECTIVE AS HERBICIDES. |