摘要:
Compounds of formula: ##STR1## in which: n=0, 1, 2f=0, 1Ar is an optionally substituted phenyl or pyridyl groupU a chlorine or bromine atomV a bromine or chlorine or iodine atomB is C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.10 cycloalkyl, which are optionally substituted by 1 to 6 halogen atoms, phenyl or pyridyl or oxidized pyridyl, which are optionally substituted.Use of these compounds as herbicides which are selective but especially antigraminaceous at preemergence.
摘要:
Compounds corresponding to the general formula (I) ##STR1## wherein R.sub.1 is halogen, optionally halogen-substituted alkyl (C.sub.1 -C.sub.6), alkoxy (C.sub.1 -C.sub.4); R.sub.2 and R.sub.3 are independently alkyl (C.sub.1 -C.sub.3), alkoxy (C.sub.1 -C.sub.4), alkoxyalkyl (C.sub.2 -C.sub.8); R.sub.4 is acyl, azidomethyl, alkoxycarbonylmethyl (C.sub.3 -C.sub.8), hydroxyalkyl (C.sub.2 -C.sub.5), halogenoalkyl (C.sub.2 -C.sub.5), alkyl (C.sub.1 -C.sub.4) optionally substituted by a heterocyclic radical, alkynyloxyalkyl (C.sub.4 -C.sub.8); and n is an integer of from 0 to 5 are useful herbicidally active compounds.
摘要:
Aniline derivatives of the general formula: ##STR1## wherein X represents a halogen atom or a lower alkyl, lower alkoxy, lower alkenyl, lower alkenyloxy, lower alkyl substituted by one or more halogen atoms, nitro or cyano group or an amino group unsubstituted or substituted by one or two lower alkyl groups, which may be the same or different, or by a group --CO--R.sup.1 (wherein R.sup.1 represents a lower alkyl, lower alkoxy, mono (lower) alkylamino group or di (lower) alkylamino group wherein the lower alkyl groups may be the same or different), n represents 0 or an integer from 1 to 5 inclusive, it being understood that when n represents an integer from 2 to 5 inclusive, atoms or groups represented by X may be the same or different, and Q represents a group of the general formula: ##STR2## wherein R.sup.2 and R.sup.3 may be the same or different and each represents a hydrogen atom or a lower alkyl group, and R.sup.4 represents a cyano group or a group --COR.sup.5, wherein R.sup.5 represents a hydroxy or OR.sup.6 group, wherein R.sup.6 represents a lower alkyl group and, when R.sup.5 represents a hydroxy group, agriculturally-acceptable inorganic and organic salt thereof, and, when Q represents a group of general formula IIB, wherein R.sup.2, R.sup.3 and R.sup.4 are as hereinbefore defined, agriculturally acceptable acid addition salts thereof possess useful herbicidal properties.
摘要:
The invention relates to new 2,3-dihydro-4-pyrone derivatives.These compounds correspond to the formula: ##STR1## in which R.sub.2 represents an alkyl radical (C.sub.2 -C.sub.3) and R.sub.3 represents and alkyl radical (C.sub.1 -C.sub.4), an alkenyl radical (C.sub.3 -C.sub.5) or an alkynyl radical (C.sub.3 -C.sub.5).They can be used for destroying weeds in crops, in particular sunflower and cotton crops.