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8 条记录 (耗时 0.02 秒)

    Method for direct preparation for 1,2,4-triazole from hydrazine and formamide
    4.
    发明授权
    Method for direct preparation for 1,2,4-triazole from hydrazine and formamide 失效
    从肼和甲酰胺直接制备1,2,4-三唑的方法

    公开(公告)号：US4267347A

    公开(公告)日：1981-05-12

    申请号：US92257

    申请日：1979-11-07

    申请人： Harris E. Petree ,  Joseph R. Pociask ,  John T. Gupton

    发明人： Harris E. Petree ,  Joseph R. Pociask ,  John T. Gupton

    IPC分类号： C07D249/08

    CPC分类号： C07D249/08

    摘要： Process for the preparation of 1,2,4-triazole comprises contacting hydrazine or its aqueous solutions with at least about 2.5 moles of formamide at a temperature of 140.degree. to 210.degree. C. and then recovering the resultant 1,2,4-triazole in yields of 92-98% with 94-98% purity. The formamide is maintained in an excess over about the 2.5 molar amount consumed in the reaction with the hydrazine. Recovery steps for isolating the 1,2,4-triazole are disclosed.

    摘要翻译： 制备1,2,4-三唑的方法包括在140〜210℃的温度下使肼或其水溶液与至少约2.5摩尔的甲酰胺接触，然后回收得到的1,2,4-三唑 产率为92-98％，纯度为94-98％。 在与肼的反应中消耗的甲酰胺保持超过约2.5摩尔量的过量。 公开了用于分离1,2,4-三唑的回收步骤。

    Preparation of phenolic ethylenediaminepolycarboxylic acids
    5.
    发明授权
    Preparation of phenolic ethylenediaminepolycarboxylic acids 失效
    酚醛二胺多羧酸的制备

    公开(公告)号：US4130582A

    公开(公告)日：1978-12-19

    申请号：US788712

    申请日：1977-04-19

    申请人： Harris E. Petree ,  Hal L. Myatt ,  Alex M. Jelenevsky

    发明人： Harris E. Petree ,  Hal L. Myatt ,  Alex M. Jelenevsky

    IPC分类号： C07C51/00

    CPC分类号： C07C233/12

    摘要： A process for the preparation of phenolic ethylenediamine polycarboxylic acids in predominantly the ortho isomeric form which comprises reacting a phenol compound, ethylenediamine, glyoxylic acid and a base, said phenol compound functioning both as a reactant and as the sole solvent for the reaction system. The product can then be isolated or directly reacted with an iron salt to form the corresponding iron chelate.

    摘要翻译： 用于制备主要为邻位异构形式的酚类乙二胺多元羧酸的方法，其包括使酚化合物，乙二胺，乙醛酸和碱反应，所述酚化合物既用作反应物又用作反应体系的唯一溶剂。 然后可以将产物与铁盐分离或直接反应形成相应的铁螯合物。

    Process for the preparation of cyclopropylmethyl-n-propylamine
    6.
    发明授权
    Process for the preparation of cyclopropylmethyl-n-propylamine 失效
    制备环丙基甲基正丙胺的方法

    公开(公告)号：US4275238A

    公开(公告)日：1981-06-23

    申请号：US111055

    申请日：1980-01-10

    申请人： Harris E. Petree ,  James B. Nabors

    发明人： Harris E. Petree ,  James B. Nabors

    IPC分类号： C07C45/59 ,  C07D307/28 ,  C07C85/08

    CPC分类号： C07D307/28 ,  C07C45/59

    摘要： Cyclopropylmethyl-N-n-propylamine is prepared by (a) cyclizing 1,4-butanediol by a cobalt-containing catalyst to 2,3-dihydrofuran at a temperature in the range of about 210.degree.-235.degree. C.; (b) thermally isomerizing the 2,3-dihydrofuran to cyclopropanecarboxaldehyde in an open-reactor columm; and (c) reductively alkylating the cyclopropanecarboxaldehyde with n-propylamine and hydrogen in the presence of a platinum catalyst.

    摘要翻译： 环丙基甲基-N-正丙胺通过以下方法制备：（a）在约210-235℃的温度下，通过含钴催化剂将1,4-丁二醇环化为2,3-二氢呋喃。 （b）在开放反应釜中将2,3-二氢呋喃热异构化为环丙烷甲醛; 和（c）在铂催化剂存在下，用正丙胺和氢还原烷基化环丙烷甲醛。

    Caustic-free process for the production of monochloro-diamino-s-triazines
    7.
    发明授权
    Caustic-free process for the production of monochloro-diamino-s-triazines 失效
    无氯工艺生产一氯二氨基三嗪

    公开(公告)号：US4288594A

    公开(公告)日：1981-09-08

    申请号：US118375

    申请日：1980-02-04

    申请人： Philip G. McCracken ,  Hal Myatt ,  Harris E. Petree

    发明人： Philip G. McCracken ,  Hal Myatt ,  Harris E. Petree

    IPC分类号： C07D251/44 ,  C07D251/50

    CPC分类号： C07D251/50 ,  C07D251/44

    摘要： A new and improved process is provided for preparing monochloro-diamino-s-triazines which are useful as herbicides.The process comprises reacting in a first stage cyanuric chloride and a selected monoalkylamine hydrochloride at elevated temperature to give a dichloro-monoalkylamino-s-triazine and reacting in a second stage this dichloro-monoalkylamino-s-triazine with an excess of a different monoalkylamine which may be introduced as a pure liquid, as gas or as a solution in water. The third stage of the process consists of an exchange whereby the monoalkylamine hydrochloride of the first stage and the free monoalkylamine of the second stage are generated. The process gives consistent yields in excess of 97% of monochloro-diamino-s-triazines. Because the process is caustic-free and due to the feasibility of recycling the excess of monoalkylamines employed, no serious effluent problems arise.

    摘要翻译： 提供了一种新的改进方法，用于制备可用作除草剂的一氯二氨基-s-三嗪。 该方法包括在升高的温度下使第一级氰尿酰氯和选择的单烷基胺盐酸盐反应，得到二氯单烷基氨基-s-三嗪并在第二阶段使该二氯单烷基氨基-s-三嗪与过量的不同的单烷基胺反应， 可以作为纯液体，作为气体或作为在水中的溶液引入。 该方法的第三阶段是由第一阶段的单烷基胺盐酸盐和第二阶段的游离单烷基胺生成的交换体。 该方法得到超过97％的一氯二氨基-s-三嗪的一致收率。 因为该方法是无腐蚀性的，并且由于使用过量的单烷基胺的循环的可行性，所以不会出现严重的流出物问题。