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    • 4. 发明授权
    • Production of S-substituted isothioureas
    • S-取代的异硫脲的生产
    • US4659819A
    • 1987-04-21
    • US632132
    • 1984-07-18
    • Dennis E. JackmanDietmar B. WestphalThomas Schmidt
    • Dennis E. JackmanDietmar B. WestphalThomas Schmidt
    • C07B61/00C07C67/00C07C325/00C07C335/30C07D239/56C07D251/38C07D253/06C07D253/07C07D239/38
    • C07D239/56C07D251/38C07D253/07
    • In the production of an S-substituted isothiourea including the function group ##STR1## in which R.sup.1 is an alkyl, alkenyl, aryl or aralkyl radical, wherein a thiourea including the functional group ##STR2## is reacted with an etherifying agent to replace H by R.sup.1, the improvement which comprises effecting the reaction in two steps, in the first step reacting the thiourea material with an etherifying agent including the radical Rin whichR is an alkyl, alkenyl aryl or aralkyl radical different from R.sup.1 thereby to produce the ether ##STR3## and in the second step reacting the ether with a compound of the formula R.sup.1 SH. The process is particularly applicable to the production of the known herbicide ##STR4## from the corresponding thiourea where in the first step methyl bromide or methyl iodide is used to form the S-methyl isothiourea which is then interchanged with ethyl mercaptan. Higher overall yields and/or economies are thereby achieved.
    • 在制备包含其中R 1为烷基,烯基,芳基或芳烷基的官能团的S-取代的异硫脲,其中将包含官能团的硫脲与醚化剂反应以用H代替H R1的改进包括在两个步骤中进行反应,在使硫脲材料与包含其中R是不同于R 1的烷基,烯基芳基或芳烷基的基团R的醚化剂反应的第一步中, 并且在第二步中使醚与式R1SH的化合物反应。 该方法特别适用于从相应的硫脲生产已知的除草剂,其中在第一步中使用甲基溴或甲基碘形成S-甲基异硫脲,然后与乙硫醇交换。 从而实现更高的整体产量和/或经济。
    • 6. 发明授权
    • Process for manufacturing substituted triazolinones
    • 制备取代的三唑啉酮的方法
    • US06222045B1
    • 2001-04-24
    • US09665092
    • 2000-09-20
    • Dennis E. Jackman
    • Dennis E. Jackman
    • C07D24912
    • C07D249/12
    • The present invention relates to a process for manufacturing substituted triazolinones, which are intermediates in the preparation of herbicidally active compounds. In particular, this invention relates to the reaction of an isothiocyanate with an alkanol to produce a thionocarbamate intermediate product; alkylation of the intermediate product, reaction of the alkylated intermediate with and alkoxycarbobyl or aryloxycarbonyl hydrazine and reaction of the resultant compound with a base to produce a substituted triazolinone. In this context the terms “alkanol” and “alkylation” represent generic terms and thus, include the use of alkanols and alkylating agents having an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkylalkyl group, an aryl group or an arylalkyl group.
    • 本发明涉及制备取代三唑啉酮的方法,它是制备除草活性化合物的中间体。 特别地,本发明涉及异硫氰酸酯与链烷醇反应产生硫代氨基甲酸酯中间产物; 中间产物的烷基化,烷基化中间体与烷氧基羰基或芳氧基羰基肼的反应,并将所得化合物与碱反应,生成取代的三唑啉酮。 在本文中,术语“烷醇”和“烷基化”表示通用术语,因此包括使用具有烷基,链烯基,炔基,环烷基,环烷基烷基,芳基的烷醇和烷基化剂 或芳基烷基。