| abstract |
HERBICIDE COMPOUNDS OF TIENO- AND FUROPYRIDINE AND TIENO- AND FUROIMIDAZOPIRROL PIRIDINDIONA, REPRESENTED BY FORMS (I), (II), (III) AND (IV), WHERE THE DOTTED LINE REPRESENTS A SIMPLE OR DOUBLE LINK; Y, Y ', Z, Z' ARE HYDROGEN, METHYL, ETHYL, METOXY, CHLORINE, BROMINE, NITRO, TRIFLUORMETHYL OR PHENYL; CAN Y AND Z TOGETHER FORM AN ETHYLENE CHAIN C3-C4; R3 IS HYDROGEN, METHYL, BUTENYL, PROPINYL OR FURFURYL; R1 AND R2 ARE METHYL, ETHYL, ISOPROPYL, OR WHEN TAKEN TOGETHER FORM A CYCLOHEXYL OR 2-METHYCYCLOHEXYL RING; X AND W ARE OXYGEN, SULFUR, OR SULPHONYL AND WHEN R1 AND R2 ARE NOT THE SAME AS THE OPTICAL ISOMERS OF THE SAME, AND WHEN R3 IS HYDROGEN, IF THE ADDITIONAL SALTS OF THE SAME ACID ARE DESIRED. |