Processes for making hydrazides
    3.
    发明授权
    Processes for making hydrazides 有权
    制备酰肼的方法

    公开(公告)号:US08853451B2

    公开(公告)日:2014-10-07

    申请号:US13755886

    申请日:2013-01-31

    申请人: Wyeth LLC

    摘要: A method is disclosed for preparing hydrazides from hydrazine and an acyl chloride which comprises the steps of (a) preparing a stirred substantially uniform slurry comprising hydrazine and an inert solvent at low temperature; and (b) adding an acyl chloride continuously to said slurry. The method avoids or limits production of undesired bis-hydrazide by-products. The method is used to prepare 3-methyl-3-mercaptobutanoic acid hydrazide, a molecule used to link calicheamicin to a monoclonal antibody.

    摘要翻译: 公开了用于从肼和酰氯制备酰肼的方法,其包括以下步骤:(a)在低温下制备包含肼和惰性溶剂的搅拌的基本均匀的浆料; 和(b)向所述浆料中连续加入酰氯。 该方法避免或限制不需要的双酰肼副产物的生产。 该方法用于制备3-甲基-3-巯基丁酸酰肼,一种用于将加利车霉素与单克隆抗体连接的分子。

    Method for making hydrazide or hydrazine compounds
    7.
    发明授权
    Method for making hydrazide or hydrazine compounds 失效
    制备酰肼或肼化合物的方法

    公开(公告)号:US5300688A

    公开(公告)日:1994-04-05

    申请号:US976764

    申请日:1992-11-16

    IPC分类号: C07C241/02 C07C241/04

    摘要: This invention relates to the preparation of hydrazide or hydrazine compounds. More particularly, this invention relates to an efficient method for the preparation of substituted hydrazides, hydrazines, and intermediates therefor, from urea starting products. Such hydrazide and hydrazine compounds are useful as insecticides.

    摘要翻译: 本发明涉及酰肼或肼化合物的制备。 更具体地说,本发明涉及从尿素起始产物制备取代的酰肼,肼及其中间体的有效方法。 这种酰肼和肼化合物可用作杀虫剂。