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    • 1. 发明授权
    • Preparation of substituted thiadiazolyloxyacetamides
    • 取代的噻二唑氧基乙酰胺的制备
    • US4528379A
    • 1985-07-09
    • US515084
    • 1983-07-18
    • Reimer CollnKarl H. Mohrmann
    • Reimer CollnKarl H. Mohrmann
    • A01N43/824A01N43/836C07D285/08C07D285/12C07D285/13C07D417/12
    • C07D285/08C07D285/13
    • In a process for the preparation of a substituted thiadiazolyloxyacetamide of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is hydrogen, alkyl, alkenyl, alkenyl, alkinyl, optionally substituted cycloalkyl or cycloalkenyl, halogenoalkyl, alkoxyalkyl, alkoxy, aralkyl or optionally substituted aryl, orR.sup.1 and R.sup.2, together with the nitrogen atom to which they are bonded, form an optionally substituted heterocyclic structure which can contain further hetero atoms,One of X and Y is a nitrogen atom and the other a C-R.sup.3 a grouping, andR.sup.3 is alkyl, alkoxy, alkylthio, alkylsulphonyl, halogenoalkyl, aralkyl, aralkoxy, aralkythio or optionally substituted aryl,wherein a substituted 5-halogenothiadiazole of the formula ##STR2## in which Hal is halogen, is reacted with a hydroxyacetamide of the formula ##STR3## in the presence of a base as an acid acceptor and, optionally in the presence of a diluent, the improvement which comprises employing lithium hydroxide or its hydrate as the base, and carrying out the reaction at a temperature between about -10.degree. C. and +60.degree. C. The end products are known herbicides.
    • 在制备式“IMAGE”的取代的噻二唑氧基乙酰胺的方法中,其中R 1和R 2各自独立地为氢,烷基,烯基,烯基,炔基,任选取代的环烷基或环烯基,卤代烷基,烷氧基烷基,烷氧基,芳烷基或任选取代 芳基或R 1和R 2与它们所键合的氮原子一起形成可含有其它杂原子的任选取代的杂环结构,X和Y之一是氮原子,另一个是C-R 3a组,和 R 3是烷基,烷氧基,烷硫基,烷基磺酰基,卤代烷基,芳烷基,芳烷氧基,芳烷基或任选取代的芳基,其中Hal为卤素的式“IMAGE”的取代的5-卤代噻二唑与下式的羟基乙酰胺 在作为酸受体的碱存在下,并且任选地在稀释剂的存在下,包括使用氢氧化锂或其水合物作为碱的改进, 并在约-10℃至+ 60℃的温度下进行反应。最终产物是已知的除草剂。