Patent DE-19821614-A1 (DE)
Title: Sugar beet mutants which are tolerant to sulfonylurea herbicides
Inventor: STUEBLER HERMANN
IPC: A01H5/12
Filed: 1998-05-14
Abstract: Sugar beet mutants (including seeds, propagative material and cells) which are tolerant to sulfonylurea herbicides are new. The sugar beet mutants are tolerant to sulfonylureas A1)-A18):  A1) compounds (I) or their salts;  A2) compounds (II) or their salts;  A3) compounds (III), their N-oxides or salts;  A4) amidosulfuron;  A5) ethoxysulfuron;  A6) triasulfuron;  A7) metsulfuron;  A8) tribenuron; A9) flupyrsulfuron;  A10) nicosulfuron;  A11) rimsulfuron;  A12) primisulfuron;  A13) prosulfuron;  A14) sulfosulfuron;  A15) oxasulfuron;  A16) ethametsulfuron;  A17) imazosulfuron;  A18) compounds (IV).  Q  = O; S; or NR<4>;  Y  = CH or N;  R  = H; alkyl optionally substituted with halo, alkoxy, thioalkyl, CN, alkoxycarbonyl or alkenyl; alkenyl; alkynyl; cycloalkyl optionally substituted with alkyl, alkoxy, alkylthio or halo; cycloalkenyl; phenyl-alkyl optionally ring-substituted with 12 groups; or a group of formula (a)-(j):  X  = O; S; SO; or SO2;  R<1> = H or alkyl; R<2> = H; halo; or alkyl or alkoxy optionally substituted with halo or alkoxy;  R<3>  = H; halo; alkyl, alkoxy or alkylthio optionally substituted with halo, alkoxy or alkylthio; NR<5>R<6>; cycloalkyl; alkenyl; alkynyl; alkenyloxy; or alkynyloxy;  R<4>  = H; alkyl; or alkoxy;  R<5> and R<6>  = H; alkyl; alkenyl; haloalkyl; or alkoxy; R<1>a   = CO-Qa-R<8>;  R<2>a and R<3>a  = H or alkyl;   R<4>a = H; alkyl; OH; or alkoxy; R<5>a  = alkylsulfonyl; CHO; alkyl-CO optionally substituted with halo; alkoxy-oxalyl; cycloalkyl-CO; -C(W)-T-R<9>; -C(W)-NR<10>R<11>; or -C(W)-N(R<12>)2;  W and T  = O or S;  R<9>  = H or alkyl optionally substituted with halo, alkoxy, alkylthio, alkoxy-CO or alkyl-CO;  R<10> and R<11>  = H; alkyl optionally substituted with halo; alkenyl; or alkynyl (at least 1 of R<10> and R<11> is H);  N(R<12>)2 = a 5-6 membered heterocycle optionally containing a further N or O, S, SO or SO2 and optionally substituted with alkyl or oxo; Qa = O; S; or NR<13>; R<6>a = H; alkyl; alkoxy; or halo; R<8> = alkyl optionally substituted with halo; alkenyl; or alkynyl;  A = a group of formula (k):  Xa = halo; Me; Et; OMe; OEt; OCF2H; CF3; or OCH2CF3; and Ya = Me; Et; or OMe or OEt optionally substituted with halo; or  Xa = Me; Et; or OMe or OEt optionally substituted with halo; and  Ya = halo; Me; Et; OMe; OEt; OCF2H; CF3; or OCH2CF3; Z' = CH or N; R<7> = H or Me; R<13> = H; alkyl optionally substituted with halo; alkenyl; or alkynyl; R1' = H; halo; alkyl optionally substituted with halo; alkoxy; or alkylthio; R2' = H or Me; R3' = Me or OMe; A1 = -NR4'R5'; R4' = H; alkyl optionally substituted with halo, alkoxy, alkenyloxy, alkynyloxy or alkylthio; R5' = H; alkyl optionally substituted with halo, alkoxy, alkenyloxy, alkynyloxy or alkylthio; or C(O)R6'; R6' = H; alkyl or cycloalkyl optionally substituted with halo or alkoxy; alkenyl optionally substituted with halo; phenyl, benzyl or naphthyl optionally substituted with 15 groups; or OR7'; R7' = alkyl optionally substituted with halo, alkoxy, cycloalkyl, CN, COOR19 or CONR26R27; alkenyl or alkynyl (each optionally substituted with halo); oxetan-3-yl; cycloalkyl optionally substituted with halo, alkyl or alkoxy; or phenyl, benzyl or naphthyl optionally substituted with 14 groups; R8 = H; alkyl; alkenyl; alkynyl; or oxetan-3-yl; R9-R12, R16, R17, R20, R21 and R23-R27 = H; alkyl; alkenyl; or alkynyl; or R10+R20 = -C(O)-X5-alkyl or -C(O)-alkyl (each optionally substituted with halo); or R10+R11 or R12+R13 or R16+R17 or R20+R21 or R23+R24 or R25+R9 or R26+R27 = alkylene optionally partly interrupted with O or NR14; R14 = H; alkyl; alkenyl; or alkynyl; R15 and R29 = alkyl or haloalkyl; R18 and R30 = alkyl substituted with COOR28; R19, R22 and R28 = H or alkyl; X1 and X3 = S; SO; or SO2; X2 and X4 = O or S; X5 = O or NR14. The full definitions are given in the DEFINITIONS (Full Definitions) Field.  Independent claims are also included for:  a) the preparation of the sulfonylurea-tolerant sugar beet mutants; and  b) the control of undesired plant growth in sulfonylurea-tolerant sugar beet mutant crops by applying to the mutants (including seeds and propagative material) or to their cultivation area a sulfonylurea A1)-A18) alone or as a herbicide.