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    • 5. 发明授权
    • Process for the preparation of
N,N-dimethyl-N-(2-bromo-4-methylphenyl)-triazene
    • 制备N,N-二甲基-N-(2-溴-4-甲基苯基) - 三氮烯的方法
    • US4394309A
    • 1983-07-19
    • US249247
    • 1981-03-30
    • Claus Stolzer
    • Claus Stolzer
    • C07C245/24C07C17/093C07C41/22C07C67/00C07C241/00C07C113/00C07C87/60C07C113/04
    • C07C17/093C07C231/12C07C241/00
    • A process for the preparation of N,N-dimethyl-N'-(2-bromo-4-methyl-phenyl)-triazene of the formula ##STR1## comprising (a) reacting N-acetyl-p-toluidine of the formula ##STR2## with bromine at a temperature between about 0.degree. and 100.degree. C., to give the intermediate product of the formula ##STR3## (b) reacting the intermediate product with hydrochloric acid by either (i) adding a dilute solution of aqueous hydrochloric acid to the intermediate product in its reaction solution and heating the mixture to a temperature between about 50.degree. and 120.degree. C., or(ii) precipitating the intermediate product from its reaction solution by mixing with water and filtering off, and without purification or drying heating the precipitate with dilute aqueous hydrochloric acid to a temperature between about 50.degree. and 120.degree. C., thereby to form a solution of 2-bromo-4-methylaniline hydrochloride, (c) reacting the resulting aqueous solution with an alkali metal nitrite at a temperature between about -20.degree. and +30.degree. C., and (d) reacting the product with dimethylamine at a temperature between about 0.degree. and 50.degree. C.
    • 制备下式的N,N-二甲基-N' - (2-溴-4-甲基 - 苯基) - 三烯的方法,包括:(a)使下式的N-乙酰基 - 对甲苯胺, 在约0℃至100℃的温度下加入溴,得到中间产物,其结构式如下:(b)使中间产物与盐酸反应,方法是(i)加入稀盐酸水溶液 在其反应溶液中向中间产物加酸,并将混合物加热至约50至120℃的温度,或(ii)通过与水混合并过滤从而将其从反应溶液中沉淀出来,并且不经纯化或 干燥,用稀盐酸水溶液将沉淀物加热至约50〜120℃,由此形成2-溴-4-甲基苯胺盐酸盐溶液,(c)使所得水溶液与碱金属亚硝酸盐 在约-20℃的温度下 EG和+ 30℃,和(d)在约0℃至50℃的温度下使产物与二甲基胺反应。
    • 7. 发明授权
    • Preparation of phenoxy-azolyl-butanone derivatives
    • 苯氧基 - 唑基 - 丁酮衍生物的制备
    • US4388465A
    • 1983-06-14
    • US300071
    • 1981-09-08
    • Hans-Ludwig ElbeHermann AroldEckart KranzClaus Stolzer
    • Hans-Ludwig ElbeHermann AroldEckart KranzClaus Stolzer
    • A01N43/50A01N43/653C07D233/60C07D249/08C07D521/00
    • C07D231/12C07D233/56C07D249/08
    • In the preparation of a phenoxy-azolyl-butanone derivative of the formula ##STR1## in which X is a halogen atom,Y is a hydrogen or halogen atom, andAz is an imidazolyl radical or a 1,2,4-triazolyl radical,wherein dichloropinacolin of the formulaCl.sub.2 CH--CO--C(CH.sub.3).sub.3is reacted with an azole of the formulaAz--Hand a phenol of the formula ##STR2## in the presence of an acid-binding agent, the improvement which comprises carrying out the reaction in the presence of a water-immiscible organic solvent at a temperature between about 40.degree. and 150.degree. C., adding to the solvent at a temperature between about 0.degree. and +80.degree. C. a mineral acid, thereby to precipitate the mineral acid salt of the phenoxy-azolyl-butanone derivative, and separating such salt. Surprisingly the product does not hydrolyze when standing in contact with the mineral acid solution. The product is a known fungicide.
    • 在制备其中X是卤素原子的式“IMAGE”的苯氧基 - 唑基 - 丁酮衍生物的制备中,Y是氢或卤素原子,并且Az是咪唑基或1,2,4-三唑基, 其中式Cl2CH-CO-C(CH3)3的二氯青霉素与酸结合剂存在下与式为Az-H的唑和式“IMAGE”的苯酚反应,其改进包括进行 在与水不混溶的有机溶剂的存在下在约40℃至150℃的温度下反应,在约0℃至+ 80℃的温度下加入无机酸,从而沉淀出 苯氧基 - 唑基 - 丁酮衍生物的无机酸盐,并分离此盐。 令人惊讶的是,当与无机酸溶液接触时,产物不会水解。 该产品是已知的杀真菌剂。
    • 8. 发明授权
    • Preparation of
O,O-diethyl-O-(1-phenyl-2-cyano-prop-1-enyl)-thionophosphoric acid ester
    • 制备O,O-二乙基-O-(1-苯基-2-氰基 - 丙-1-烯基) - 硫代磷酸酯
    • US4219511A
    • 1980-08-26
    • US29815
    • 1979-04-13
    • Hans-Jochem RiebelClaus Stolzer
    • Hans-Jochem RiebelClaus Stolzer
    • A01N57/14C07F9/165C07F9/173
    • C07F9/173
    • In the preparation of O,O-diethyl-O-(1-phenyl-2-cyano-prop-1-enyl)-thionophosphoric acid ester by reacting a benzoic acid ester with propionitrile in the presence of an alkali metal alcoholate and then reacting the reaction mixture with O,O-diethyl-thionophosphoric acid diester chloride, the improvement which comprises employing about 5 to 50 moles of the propionitrile per mole of benzoic acid ester, distilling off the alcohol obtained during the reaction of propionitrile, benzoic acid ester and alcoholate before the addition of the O,O-diethyl-thionophosphoric acid diester chloride, and maintaining the volume of the reaction mixture approximately constant by adding propionitrile during the distillation. Advantageously the alcoholate is sodium methylate, ethylate or tert.-butylate or potassium methylate, ethylate or tert.-butylate, the reaction is effected at about 80.degree. to 120.degree. C., about 5 to 25 moles of propionitrile are employed per mole of benzoic acid ester, about 1 to 1.3 moles of benzoic acid ester and about 1 to 1.15 moles of alkali metal alcoholate are employed per mole of O,O-diethyl-thionophosphoric acid diester chloride, and the benzoic acid ester is the methyl ester or ethyl ester.
    • 在制备O,O-二乙基-O-(1-苯基-2-氰基 - 丙-1-烯基) - 硫代磷酸酯时,通过苯甲酸酯与丙腈在碱金属醇化物存在下反应, 与O,O-二乙基 - 硫代磷酸二酯氯化物的反应混合物,其改进包括使用约5至50摩尔丙腈/摩尔苯甲酸酯,蒸馏出丙腈,苯甲酸酯和 在加入O,O-二乙基 - 硫代磷酸二酯氯化物之前加入醇化物,并且在蒸馏期间通过加入丙腈将反应混合物的体积保持在约恒定。 有利地,醇化物是甲醇钠,乙酸乙酯或叔丁醇钠或甲醇钾,乙酸乙酯或叔丁醇钾,反应在约80℃至120℃下进行,每摩尔环己烷使用约5至25摩尔丙腈 每摩尔O,O-二乙基 - 硫代磷酸二酯氯化物使用苯甲酸酯,约1至1.3摩尔苯甲酸酯和约1至1.15摩尔碱金属醇化物,苯甲酸酯是甲酯或乙酯 酯。