摘要:
Ectoparasiticidal compositions and uses employing 0,0-dialkyl-0-pyridazine phosphoric and thionophosphoric acid esters are described. A typical embodiment is a composition for combatting blowflies containing diethyl-0-[1-phenyl-6-oxopyridazin-3-yl]phosphoric acid ester.
摘要:
Novel insecticidal pyrazolines of the formula ##STR1## wherein R.sup.1 and R.sup.2 represent hydrogen, C.sub.1-4 alkyl, or unsubstituted or halogen substituted phenyl,A represents optionally substituted phenyl or halogen-substituted 3-pyridyl, andX and Y individually represent hydrogen, halogen, C.sub.1-4 alkyl, halogeno-C.sub.1-4 alkyl, halogeno-C.sub.1-4 alkoxy or halogeno-C.sub.1-4 alkylthio, or X and Y together form haloalkylenedioxy, with the proviso that X and Y do not simultaneously represent hydrogen, and other provisos as well.
摘要:
Insecticidal, acaricidal and nematocidal pyrimidinyl(thiono)(thio)-phosphoric(phosphonic) acid (amide) esters of the formula ##STR1## in which R represents hydrogen, or represents an optionally substituted radical selected from the group consisting of alkyl, alkoxy, alkylthio, dialkylamino, cycloalkyl and aryl,R.sup.1 represents hydrogen, aklyl or halogen,R.sup.2 represents alkyl,R.sup.3 represents alkyl, alkoxy, alkylthio, amino, alkylamino, dialkylamino or aryl andX represents oxygen or sulphur.
摘要:
A process for the preparation of a compound of the formula ##STR1## in which R is hydrogen, alkoxy, alkylamino, dialkylamino or an optionally substituted radical from the group consisting of alkyl, cycloalkyl, aralkyl and aryl,R.sup.1 is an optionally substituted radical from the group consisting of alkyl, alkoxy, alkylthio, mono- or dialkylamino and phenyl,R.sup.2 is optionally substituted alkyl, andY is oxygen or sulphur,comprising(a1) reacting a compound of the formula ##STR2## with ##STR3## or withR.sup.5 COOHin whichR.sup.5 is R except for hydrogen, or equivalent, to produce ##STR4## oxidizing that compound or its salt to ##STR5## and phosphorylating. Several of the intermediates are new.
摘要:
Aminoacrylic and derivatives of the formula ##STR1## in which R is alkyl,R.sup.1 is alkoxycarbonyl, andR.sup.2 is alkyl, cycloalkyl, amino, alkylamino or dialkylamino,and intermediates therefor. The compounds can be converted into antibacterially active known oxyquinolinecarboxylic acid derivatives.
摘要:
A process for preparing 2-alkylthiomethyl-4-hydroxypyrimidines, known to be useful as intermediates in making insecticides, of the formula ##STR1## in which R.sup.1 is alkyl,R.sup.2 is hydrogen or alkyl, andR.sup.3 is hydrogen, alkyl or alkoxy, orR.sup.2 and R.sup.3 together represent a divalent alkylene radical,comprising reacting a sulphonyloxyacetonitrile of the formulaR--SO.sub.2 --O--CH.sub.2 --CN (II)in whichR is alkyl, halogenoalkyl or optionally substituted aryl,with methanol or ethanol, reacting the reaction mixture formed with ammonium chloride, reacting the reaction mixture formed with an alkali metal thiolate of the formulaR.sup.1 --S.sup..crclbar. Me.sup..sym. (III)in which Me.sup.+ is an alkali metal cation,and, in the presence of a base, with a .beta.-ketocarboxylic acid ester of the formula ##STR2## at a temperature between about -20.degree. and +100.degree. C.
摘要:
N-substituted O-pyrazol-4-yl carbamates of the general formula ##STR1## are new and are obtained when (a) a 4-hydroxy-pyrazole of the general formula ##STR2## is reacted with an N-sulphenylated carbamoyl halide of the formula ##STR3## or (b) a 4-hydroxy-pyrazole of formula (II) is reacted with an acylating agent of the general formula ##STR4## or (c) an O-pyrazol-4-yl carbamate of the general formula ##STR5## is reacted with a sulphenyl halide of the general formulaR.sup.7 --(S).sub.n --Y (VI)The new N-substituted O-pyrazol-4-yl carbamates of the formula (I) are distinguished by high activity as pest-combating agents, in particular by high insecticidal and nematicidal activity.
摘要:
A process for the preparation of a 1,1-dichloro-alkene of the formula ##STR1## in which R.sup.1 is hydrogen, or an optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aralkyl, aralkenyl or aryl radical, andR.sup.2 is an optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aralkyl, aralkenyl or aryl radical, orR.sup.1 and R.sup.2 together form an optionally branched and/or optionally benzo-fused hydrocarbon chain,comprising reacting a carbonyl compound of the formula ##STR2## with a trichloromethanephosphonic acid ester of the formula ##STR3## in which R.sup.3 each individually is an alkyl or phenyl radical, or together are alkanediyl,in the presence of at least an equimolar amount of magnesium. Advantageously,R.sup.1 is hydrogen,R.sup.2 is a C.sub.2 to C.sub.5 alkenyl radical or a radical of the formula ##STR4## Z is a cyano, acetal, carboxyl or C.sub.1 to C.sub.4 alkoxycarbonyl radical, or a radical of the formula COOM, andM is sodium or potassium,R.sup.3 each individually is a C.sub.1 to C.sub.4 alkyl or phenyl radical, or the two radicals R.sup.3 together are C.sub.2 to C.sub.5 alkanediyl,about 0.95 to 1.4 moles of the trichloromethanephosphonic acid ester and about 1.5 to 4 moles of magnesium are employed per mole of the carbonyl compound, and the reaction is carried out at a temperature between about 0.degree. and 150.degree. C. in a polar aprotic solvent. The products are known intermediates, especially for insecticides.
摘要:
Styryl-cyclopropane derivatives of the formula ##STR1## in which R.sup.9 represents independently of one another when n=2, halogen, cyano, nitro, or an optionally halogen-substituted alkyl, alkoxy, alkylthio or alkylenedioxy radical,n represents zero, 1, 2, 3, 4 or 5,R.sup.10 represents hydrogen or halogen, and,Y represents acetyl, cyano or carbamoyl, are produced by reacting a benzylphosphonic acid ester of the formula ##STR2## in which R.sup.4 each independently represents alkyl or phenyl or together represent alkylene,with a formylcyclopropane derivative of the formula ##STR3## or by reacting an .alpha.-hydroxyphosphonic acid ester of the formula ##STR4## with an olefinating agent of the formula ##STR5## in which Z' represents a phosphorus-containing radical ##STR6## or --P(R.sup.7).sub.3.sup..sym. X.sup..crclbar. whereinR.sup.5 and R.sup.6 are identical or different and individually represent alkyl, phenyl, alkoxy or phenoxy or R.sup.5 and R.sup.6 together represent alkanedioxy,R.sup.7 represents alkyl or phenyl andX represents halogen,in the presence of a base at a temperature between about -70 and +150.degree. C. Other olefins can be similarly prepared. Many intermediates are new and the end products are themselves intermediates for insecticides.