摘要:
A nitrogen-containing heterocyclic compound of the following formula: ##STR1## wherein D represents --N.dbd. or ##STR2## E represents .dbd.N--, ##STR3## G represents --N.dbd., ##STR4## with proviso that when G represents --N.dbd. or ##STR5## the bond of G and E is double bond; and G represents ##STR6## the bond thereof is a single bond, but the case that D represents ##STR7## E represents ##STR8## and G represents --N.dbd. is omitted (R.sup.1, R.sup.2, R.sup.9, R.sup.10, X, Y, A and Q are specified in the specification), as well as compositions for controlling and/or preventing pests and blights, said compositions containing one or two or more of said compounds as an active ingredient.
摘要:
A novel 3(2H)-pyridazinone derivative of the formula [I]: ##STR1## wherein, R represents an alkenyl group having 2 to 16 carbon atoms, an alkynyl group having 2 to 16 carbon atoms, an alkyl group having 3 to 8 carbon atoms substituted by an alkoxy group having 1 to 6 carbon atoms or G-Ra-;A represents hydrogen atom, halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, an alkylsulfinyl group having 1 to 4 carbon atoms or an alkylsulfonyl group having 1 to 4 carbon atoms;R.sup.1 represents hydrogen atom, halogen atom, an alkoxy group having 1 to 4 carbon atoms or hydroxyl group;X represents oxygen or sulfur atom;J represents ##STR2## as well as insecticidal, acaricidal and nematicidal compositions and compositions for expelling ticks parasitic on animals, said compositions containing as an active ingredient at least one of the above derivatives.
摘要:
Novel N-containing heterocyclic ring-substituted O-arylphosphate derivatives, the preparation thereof and insecticides acaricides and nematicides containing said derivatives are provided. The O-arylphosphate derivatives have the general formula: ##STR1## wherein A is --CH or nitrogen, X is hydrogen, a halogen or trifluoromethyl; Y is oxygen, S(O)n (wherein n is an integer of from 0 to 2) or NR.sup.2 (wherein R.sup.2 is hydrogen or a lower alkyl); Z is oxygen or sulfur; R and R.sup.1 independently are a lower alkoxy or lower alkylthiol; and B is hydrogen, a halogen or a lower alkyl. The O-arylphosphate derivatives have an excellent insecticidal acaricidal and nematocidal action.
摘要:
A pyridine derivative having the formula: ##STR1## wherein one of A, B, D and E is oxygen, sulfur, --SO--, --SO.sub.2 --, --NR.sup.3 --, ##STR2## or .dbd.CH-- with the rest being all carbon atoms; X is halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylthioalkyl, tetrahydrothiopyranyl, hydroxyl, CF.sub.3, phenyl or pyridyl; n is an integer of from 0 to 6,; W is oxygen or sulfur; R is hydrogen, di-lower alkylimino, C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.2 -C.sub.5 alkynyl, C.sub.4 or C.sub.5 oxacycloalkyl, C.sub.2 -C.sub.5 mono-, di- or tri-haloalkenyl, C.sub.2 -C.sub.5 haloalkynyl, glycidyl, furfuryl, alkylthioalkyl, C.sub.3 -C.sub.6 cycloalkyl or a cation R.sup.1 is C.sub.1 -C.sub.4 alkyl, R.sup.2 is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.6 cycloalkyl, or R.sup.1 and R.sup.2 together with the ajacent carbon atom, form C.sub.3 -C.sub.6 cycloalkyl; and R.sup.3 is hydrogen or C.sub.1 -C.sub.3 alkyl. The compounds are used as herbicides.
摘要:
A pulse position modulated (PPM) signal is derived from an input FM signal, and first and second switching signals are derived which are opposite in phase and correspond to alternating half cycles of the PPM signal. First and second opposite phase subcarrier signals are derived synchronized to the pilot signal in the input FM signal, and various combinations of the switching and subcarrier signals are multiplied together and the multiplication products combined to obtain left and right channel outputs.
摘要:
A stereophonic signal demodulation circuit receives an input signal including a signal modulated with first and second channel information to separate the first and second channel information from each other. The circuit includes first and second operational amplifiers and at least two switching devices namely, first and second switches for applying the input signal through respective resistors to one input terminal of the first operational amplifier and third and fourth switches for applying the input signal through respective resistors to one input terminal of the second operational amplifier. A control device controls the operations of the first through fourth switches and the first and second operational amplifiers outputs first and second channel information, respectively.
摘要:
An MPX stereophonic demodulation switching circuit having first and second identical switching circuits adapted to transmit a composite input signal to respective output terminals. First and second switching elements are connected respectively between the junction points of resistors in first and second transmission paths in each switching circuit, and a reference voltage line. A voltage follower circuit is provided to produce a reference voltage. Groups of resistors are connected in parallel between the output terminal of the voltage follower and one respective output terminal. Third and fourth switching elements are connected respectively between the connection points of the resistors in each group of resistors and the reference voltage line in each switching circuit. Opposite pairs of switching elements in the two switching circuits are controlled to be alternately rendered conductive and non-conductive.
摘要:
An opposite-phase current source is improved by eliminating the conventionally employed current mirror circuits, and by instead using a pair of transistor current sources subjected to voltage feedback and emitter-connected via a resistor. A constant current source or sources are coupled to the opposite ends of the resistor or to a mid-point thereof.
摘要:
A process for producing a tetrahydropyran-3-one derivative of the formula: ##STR1## wherein R is a hydrogen atom; a straight chained or branched C.sub.1 -C.sub.10 alkyl group which is unsubstituted or substituted by a halogen atom, a hydroxyl group, a C.sub.1 -C.sub.6 alkoxy group, a C.sub.1 -C.sub.6 alkylthio group, a C.sub.1 -C.sub.6 alkylcarbonyloxy group, a C.sub.1 -C.sub.6 alkoxycarbonyl group, a C.sub.1 -C.sub.6 mono- or dialkylamino group, a C.sub.3 -C.sub.6 cycloaklyl group, a C.sub.1 -C.sub.6 alkylaminocarbonyl group, a C.sub.1 -C.sub.6 alkylcarbonylamino group, a C.sub.1 -C.sub.6 alkylcarbonyl group or a phenyl or benzoyl group which is unsubstituted or substituted by a halogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.1 -C.sub.6 alkoxy group, a C.sub.1 -C.sub.6 alkythio group or a C.sub.1 -C.sub.6 alkoxycarbonyl group; a C.sub.3 -C.sub.6 cycloalkyl group; or a phenyl or biphenyl group which is unsubstituted or substituted by a halogen atom, a C.sub.1 -C.sub.6 alkoxy group or C.sub.1 -C.sub.6 alkylthio group, which comprises reacting a 2H-pyran-3(6H)-one derivative of the formula: ##STR2## wherein R is as defined above, and R' is a straight chained or branched C.sub.1 -C.sub.6 acyl group which is unsubstituted or substituted by a halogen atom; a benzoyl group; a C.sub.1 -C.sub.6 alkoxycarbonyl group; or a mono- or dialkylaminocarbonyl group which is unsubstituted or substituted by a C.sub.1 -C.sub.3 alkyl group or a phenyl group, with hydrogen in the presence of a catalyst selected from the group consisting of cobalt, nickel, ruthenium, rhodium, palladium, iridium, platinum and copper chromite.
摘要:
1-Phenylethyl sulfone derivatives substituted by a halogenated alkyloxy group is represented by the general formula ##STR1## where R is an alkyl group substituted by a halogen atom, n is 1 or 2, each of P and Q is a hydrogen atom or a lower alkyl group and each of X and Y is a hydrogen atom, a lower alkyl group or a halogen atom. The compounds are effective as a herbicide. Also disclosed is a process for their preparation.