摘要:
In the preparation of a 1,3-dibromo-2,2-dimethyl-propane-1,3-dicarboxylic acid derivative of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is chlorine or alkoxy, by reacting a 2,2-dimethyl-propane-1,3-dicarboxylic acid derivative of the formula ##STR2## in which R.sup.3 is hydroxy or alkoxy andR.sup.4 is hydroxy, orR.sup.3 and R.sup.4 together are an anhydride oxygen atom,with an acid halide, then reacting the product with bromine at a temperature between 0.degree. and 150.degree. C. to form a 1,3-dibromo-2,2-dimethyl-propane-1,3-dicarboxylic acid chloride and optionally reacting such acid chloride with an alkanol, the improvement which comprises employing an acid chloride as the acid halide, e.g. phosphorus pentachloride, phosphorus oxychloride, phosphorus trichloride, thionyl chloride or phosgene. Compounds of the formula ##STR3## are new. The products are intermediates for making insecticides.
摘要:
A process for the preparation of 4-fluoro-3-phenoxytoluene of the formula ##STR1## comprising reacting 3-bromo-4-fluoro-toluene of the formula ##STR2## with an alkali metal or alkaline earth metal phenolate in the presence of copper as catalyst and in the presence if isoquinoline as diluent at a temperature between about 100.degree. and 200.degree. C. Advantageously the reaction is effected in the presence of about 0.9 to 1.5 mols of potassium or magnesium carbonate, about 1 to 1.2 mols of the phenolate, about 1 to 50 g of copper, copper(I) oxide, copper(I) chloride or copper (I) bromide as catalyst and about 150 to 1,500 ml of isoquinoline per mol of 3-bromo-4-fluoro-toluene.
摘要:
O-Ethyl-S-n-propyl-O-(1-substituted-pyrazol-4-yl)-(thiono)-thiolphosphoric acid esters of the formula ##STR1## wherein R is alkyl, cycloalkyl or phenyl, andX is oxygen or sulphur, which possess arthropodicidal and nematicidal properties.
摘要:
N,N-Dimethyl-O-(1,3,4-substituted-pyrazol(5)yl)-carbamic acid esters of the formula ##STR1## in which R is optionally substituted alkyl, cycloalkyl or phenylR.sup.1 is alkoxy, alkylthio, alkylsulphinyl or alkylsulphonyl, andR.sup.2 is optionally substituted alkylwhich possess insecticidal properties.
摘要:
O-Alkyl-5-halo-pyrimidin-2-yl-thionothiol-phosphoric (phosphonic) acid esters of the formula ##STR1## in which R is alkyl,R.sup.1 is alkyl, aryl or alkoxy, andR.sup.2 is halogen,which possess arthropodical properties.
摘要:
O,O-Dialkyl-O-[1-isopropyl-1,6-dihydro-6-oxo-pyridazin-3-yl]-phosphoric acid esters of the formula ##STR1## wherein R and R' each independently is alkyl with 1 to 8 carbon atoms, andX is oxygen or sulphur which possess arthropodicidal properties.
摘要:
N,N-Dialkyl-O-(2-substituted-methyl-pyrimidin-4-yl)-carbamic acid esters of the formula ##STR1## in which R, R.sup.1 and R.sup.2 each independently is alkyl,X is oxygen or sulphur,R.sup.3 is hydrogen or alkyl, andR.sup.4 is hydrogen, alkyl or halogen, orR.sup.3 and R.sup.4 conjointly form an alkylene bridge,which possess arthropodicidal properties.
摘要:
O-Alkyl-O-(6-dialkylcarbamoyloxy-pyrimidin-4-yl)-(thiono)(thiol)-phosphoric (phosphonic) acid esters and esteramides of the formula ##STR1## in which R is alkyl,R.sup.1 is alkoxy, alkylthio, alkylamino, alkyl or phenyl,R.sup.2 is hydrogen, alkyl, alkoxy, alkylthio, alkylamino or phenyl,R.sup.3 and R.sup.4 each independently is alkyl,R.sup.5 is hydrogen, alkyl or halogen, andX is oxygen or sulphur,which possess arthropodicidal properties.
摘要:
O-[3-tert.-butyl-pyrazol(5)yl]-(thiono)(thiol)-phosphoric(phosphonic) acid esters and ester amides of the formula ##STR1## in which R is hydrogen, alkyl, cyanoalkyl, or phenyl optionally carrying at least one halogen, halogenoalkyl, alkyl or alkylthio substituent,R.sup.1 is hydrogen, halogen, alkyl or alkylthio,R.sup.2 is alkoxy, alkyl or phenyl,R.sup.3 is alkoxy, alkylthio or monoalkylamino, andX is oxygen or sulphur, which possess arthropodicidal, nematicidal and fungicidal properties.
摘要:
O-Alkyl-O-[6-tert.-butyl-pyrimidin(4)yl](thiono)(thiol)-phosphoric(phosphonic) acid esters of the formula ##STR1## in which R is hydrogen, halogen or alkyl,R.sup.1 is hydrogen or alkyl,R.sup.2 is alkyl,R.sup.3 is alkyl, alkoxy, alkylthio or phenyl, andX is oxygen or sulphur. which possess insecticidal and acaricidal properties.