IT1115324B - Herbicidal quaternised triazolo-pyridine derivs. - esp. useful for selective control of monocotyledonous weeds in dicotyledonous crops e.g. peas, beans and cotton
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Herbicidal quaternised triazolo-pyridine derivs. - esp. useful for selective control of monocotyledonous weeds in dicotyledonous crops e.g. peas, beans and cotton
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IT1115324B
IT1115324BIT2381877AIT2381877AIT1115324BIT 1115324 BIT1115324 BIT 1115324BIT 2381877 AIT2381877 AIT 2381877AIT 2381877 AIT2381877 AIT 2381877AIT 1115324 BIT1115324 BIT 1115324B
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Priority claimed from GB20982/76Aexternal-prioritypatent/GB1574415A/en
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Triazolopyridines of formula (I) and triazolopyridinium salts of formula (Ia) are new In the formulae, R1-4 are H, halogen, opt. substd. alkyl, aryl or aralkyl, NO2 or CN, R5 is a C-bonded quaternised N-contg. heterocyclic gp. X is 1 equiv. of an anion, R7 is opt. substd. alkyl or a C-bonded opt. substd. and opt. satd. heterocyclic gp. (quaternised if N-contg.), R6 is alkyl or, when R7 is a heterocyclic gp. contg. a quaternised N atom ortho to the bonding posn. R6 can form a CH2, CH2CH2, CH2CH2CH2 or CH=CR gp. bonded to the quaternised N atom, R is alkyl. A typical cpd. is 1-methyl-2-(1-methylpyridinium-4-yl) -s-triazolo(1,5-a pyridinium bis(methyl sulphate). In an example, this is prepd. from 1-aminopyridinium chloride and 4-cyanopyridine.
IT2381877A1976-05-211977-05-20Herbicidal quaternised triazolo-pyridine derivs. - esp. useful for selective control of monocotyledonous weeds in dicotyledonous crops e.g. peas, beans and cotton
IT1115324B
(en)
Herbicidal quaternised triazolo-pyridine derivs. - esp. useful for selective control of monocotyledonous weeds in dicotyledonous crops e.g. peas, beans and cotton
Herbicidal quaternised triazolo-pyridine derivs. - esp. useful for selective control of monocotyledonous weeds in dicotyledonous crops e.g. peas, beans and cotton