摘要:
A compound of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom and R is a C.sub.1 -C.sub.8 alkyl group except isopropyl, which is useful as a herbicide.
摘要:
A tetrahydrophthalimide compound of the formula: ##STR1## wherein R.sub.1 is hydrogen, alkyl, lower cycloalkyl, lower alkyl (lower)cycloalkyl, lower cycloalkyl(lower)alkyl, lower alkoxy(lower)alkyl, lower alkenyl, lower cycloalkenyl, lower cycloalkenyl (lower)alkyl, phenyl, cyano(lower)alkyl, lower alkynyl, lower alkylideneamino, lower alkylthio(lower)alkyl, benzyl, halo(lower)alkyl or lower cycloalkylideneamino, R.sub.2 is hydrogen, lower alkyl or lower alkoxy, X is chlorine or bromine, Y is oxygen or imino and Z is oxygen or sulfur, which is useful as a herbicide.
摘要:
A compound of the formula: ##STR1## wherein R is a mono- or di-halo(C.sub.3 -C.sub.4)alkenyl group or a mono-halo(C.sub.3 -C.sub.4)alkynyl group and X is a chlorine atom or a bromine atom, which is useful as a herbicide.
摘要:
A condensed phenylurazol of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, Y and Z are each an oxygen atom or a sulfur atom and R is a C.sub.1 -C.sub.3 alkyl group, an allyl group or a propargyl group and n is an integer of 4 or 5, which is useful as a herbicide.The condensed phenylurazols of the above formula wherein Z is an oxygen atom and n is an integer of 4 can be produced by treatment of a urea of the formula: ##STR2## wherein R' is a lower alkyl group (e.g. methyl, ethyl, n-propyl, isopropyl) and X, Y and R are each as defined above with a base (e.g. sodium methoxide, sodium hydroxide, potassium hydroxide) in an inert solvent (e.g. water, toluene, benzene, methanol, ethanol) at a temperature of 0.degree. to 200.degree. C.
摘要:
A compound of the formula: ##STR1## wherein R is a hydrogen atom or a lower alkoxy group and X and Y are, the same or different, each a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a carboxy(lower)alkoxy group or a lower alkoxycarbonyl(lower)-alkoxy group, which is useful as a herbicide.
摘要:
A compound of the formula: ##STR1## wherein R is a hydrogen atom or a lower alkoxy group, X and Y, being the same or different, are each a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a carboxy(lower)alkoxy group or a lower alkoxycarbonyl(lower)alkoxy group and Z is a hydrogen atom or a halogen atom, which is useful as a herbicide.
摘要:
A composition comprising an N-(2-fluoro-4-halo-5-substituted phenyl) hydantoin of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom and R.sup.1 and R.sup.2 are, same or different, each a C.sub.1 -C.sub.4 alkyl group, a cyclopropyl group, a C.sub.3 -C.sub.4 alkenyl group or a C.sub.3 -C.sub.4 alkynyl group and an inert carrier, which is useful as a herbicide.
摘要:
An emulsifiable concentrate for weed control, which comprises 10 to 40 parts by weight of N'-[4-(4-methylphenethyloxy)phenyl]-N-methoxy-N-methylurea, 5 to 20 parts by weight of an emulsifier, 5 to 35 parts by weight of at least one of phenolic solvents of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or methyl, and 5 to 80 parts by weight of at least one of aromatic hydrocarbon solvents having 6 to 11 carbon atoms.
摘要:
A compound of the formula: ##STR1## wherein R is a methyl group or an ethyl group shows a strong herbicidal activity against a wide variety of weeds without any material chemical injury to crop plants.
摘要:
An N'-phenyl-N-methyl-urea derivative of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, lower alkyl, lower alkoxy, lower alkylthio, halogen or trifluoromethyl, R.sup.4 is hydrogen or lower alkyl, A is methyl or methoxy, X is oxygen or sulfur, Y is hydrogen or halogen, Z is a straight or branched alkylene chain having not more than 8 carbon atoms which may have no less than one atom of oxygen and/or sulfur inside and/or at the end of the alkylene chain and n is an integer of 1 to 3, which shows a pronounced herbicidal activity against a wide variety of weeds in the cultivation of crop plants without any material toxicity to mammals or fish or any chemical injury to said crop plants.