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    • 50. 发明专利
    • New herbicides and intermediates
    • DE3121736A1
    • 1982-02-18
    • DE3121736
    • 1981-06-01
    • AMERICAN CYANAMID CO
    • LOS MARINUS
    • A01N43/50A01N43/76A01N43/90A01N57/24C07D207/44C07D207/452C07D207/456C07D213/81C07D213/82C07D215/48C07D471/04C07D471/14C07F7/18C07F9/6558C07D401/04C07D413/14
    • 2-Z-3-Y-4-X-5-A-6-(3-B-4-oxo or thioxo-5-R1-5-R2-imidazolin- 2-yl) pyridine derivs. of formula (I); 5,7-dihydro-2-Z-3-Y-4-X- 5,7-dioxo-6 -cyanomethyl- 6H-pyrrdo(3,4-b) pyridine derivs. of formula (XI); 5,7-dihydro-2-Z-3-Y-4-X-5,7- dioxo-6H-pyrrolo(3,4b) pyridine-6- acetamide derivs. of formula (IV); 5H-imidazo(1',2': 1,2)pyrrolo(3,4-b) pyridine-2(3H),-5- dione derivs. of formula (III) and -3(H),5-dione derivs. of formula (IIIa); and 3-carboxy- 4-X-5-Y- 6-Z-N-carbamoylmethyl picolinamide derivs. of formula (VI) are new R1 is 1-4C alkyl; R2 is 1-4C alkyl or 3-6C cycloalkyl, or R1 + R2 are 3-6C cycloalkyl opt. substd. by Me; A is e.g. COOR3, CONHR6, CHO, CH2OH etc. R3 is e.g. H di-lower alkyl-imino, opt. substd. 1-12C alkyl, halogen, OH, opt. substd. Ph COOH etc. R6 is H, OH, 3C alkenyl, 3C alkynyl, or opt. substd. 1-4C alkyl; B is H, COR4 or SO2R5; R4 is 1-11C alkyl, chloromethyl or opt. substd. phenyl R5 is 1-4C alkyl, Ph or tolyl; W is O or S; R8 is 1-4C alkyl or Ph; Xis H, halogen, OH or Me; Y and Z are e.g. each H, halogen, 1-6C alkyl, 1-6C alkoxy, 1-4C alkylthio, PhO, 1-4C haloalkyl, NO2, CN, etc. or Y + Z is (CH2)n or CL=CM-CQ=CR7; n is 3-4; L,M,Q and R7 are each e.g. H, halogen, 1-4C alkyl, etc. with certain provisos Cpds. (I), (III), (IIIa) and (IV) are herbicides useful for controlling mono- and di-cotyledonous annual, perennial and aquatic plants. Applicn. rate is 0.016-4 (pref. 0.032-2) kg/ha. (I) can also be used as a cotton defoliast. Cpds. (III), (IIIa) and (IV) and cpds. (XI) and (VI) are intermediates for (I).