BENZOXAZINE AND BENZTHIAZINE DERIVATIVES

摘要

Benzoxazine and Benzthiazine Derivatives The acylamide derivatives of the formula I below are suitable for use as a counter-agent, "antidote" or "safener" for protecting cultivated plants against the phytotoxic action of herbicides. Crops suitable in this respect are preferably millet, cereals, rice, maize and soya, and suitable herbicides are chloroacetanilides and thiolcarbamates. The acylamide derivatives have the formula I (I) in which X is oxygen, sulfur, -SO- or -SO2-; R1 is C1-C6-halogenoalkyl, C1-C6-cyanoalkyl or C2-C6-halogenoalkenyl; R2 and R5 independently of one another are hydrogen, C1-C4-alkyl, C1-C4-halogenoalkyl, C2-C4-alkenyl, C2-C4-alkynyl or C2-C4-alkoxyalkyl; R3 and R4 independently of one another are hydrogen, C2-C4-alkenyl, C2-C4-alkynyl, cyano, C2-C4-alkoxy-alkyl, -COOR8, -CO-NR9R10 or C1-C4-alkyl which is unsubstituted or substituted by halogen, cyano or -CO-A; R6 and R7 independently of one another are hydrogen, halogen, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-halogenoalkyl or C1-C4-halogeno-alkoxy, A is C1-C4-alkyl, C2-C4-alkenyl, C1-C4-alkoxy, C3-C4-alkenyloxy, C3-C4-alkynyloxy or -NR11R12; R8, R10 and R12 independently of one another are hydrogen, C1-C4-alkyl, C3-C4-alkenyl, C3-C4-alkynyl or C3-C4-alkoxyalkyl; and R9 and R11 independently of one another are hydrogen, C1-C4-alkyl, C3-C4-alkenyl, C1-C4-alkoxy, C3-C4-alkynyl or C3-C4-alkoxyalkyl, it being also possible for R9 and R10 and also R11 and R12, together with the nitrogen atom linking them, to form a 5-membered or 6-membered saturated heterocyclic structure which can, if desired, contain an oxygen or sulfur atom or an -NH- or -N(C1-C4-alkyl)- bridge as a member of the ring.