Benzoxazine and benzthiazine derivatives

Details Benzoxazine and benzthiazine derivatives Benzoxazine and benzthiazine derivatives

C - Chemistry, Metallurgy

07

D

260/243.25, 71/7

C07D 265/36 (2006.01) A01N 25/32 (2006.01) A01N 43/84 (2006.01) C07D 265/28 (2006.01) C07D 279/16 (2006.01)

Patent

CA 1243022

-1- Benzoxazine and Benzthiazine Derivatives Abstract 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 suit- able herbicides are chloroacetanilides and thiolcarbamates. The acylamide derivatives have the formula I Image (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 unsubsti- tuted 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 - 2 - 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.

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