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    Production of mixed acid anhydride and amide compound
    7.
    发明申请
    Production of mixed acid anhydride and amide compound 失效
    混合酸酐和酰胺化合物的生产

    公开(公告)号：US20040210059A1

    公开(公告)日：2004-10-21

    申请号：US10841644

    申请日：2004-05-10

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Takashi Miki ,  Hideki Ushio ,  Isao Kurimoto

    IPC: C07D213/46

    CPC classification number: C07K5/06026 ,  A61K38/00 ,  C07C269/06 ,  C07D277/46 ,  C07F9/096 ,  C07F9/3294 ,  C07C271/22

    Abstract: There is disclosed an advantageous mixed acid anhydride production method of formula (1): R1C(O)OY(O)n(R2)pnullnull(1) wherein R1, R2 and Y denote the same as defined below, n and p denote an integer of 1 or 2, which is characterized by adding a carboxylic acid of formula (2); R1COOHnullnull(2) wherein R1 denotes a hydrogen atom, an optionally substituted alkyl group or the like, an organic base to a solution of a carboxylic acid activating agent of formula (3); (R2)pY(O)nXnullnull(3) wherein R2 denotes an optionally substituted aliphatic hydrocarbyl group or the like, Y denotes a carbon atom, a phosphorus atom, or a sulfur atom, and X denotes a chlorine atom or the like.

    Abstract translation: 公开了式（1）的有利的混合酸酐的制备方法：R 1 C（O）OY（O）n（R 2）p（1）其中R 1，R 2和 Y表示与下述相同的含义，n和p表示1或2的整数，其特征在于加入式（2）的羧酸; R 1 COOH（2）其中R 1表示氢原子，任选取代的烷基等，式（3）的羧酸活化剂溶液的有机碱; （R 2）pY（O）n X（3）其中R 2表示任选取代的脂族烃基等，Y表示碳原子，磷原子或硫原子，X表示氯 原子等。

    Acetic diphenylphosphinic anhydride and method of preparing same
    8.
    发明授权
    Acetic diphenylphosphinic anhydride and method of preparing same 失效
    乙二胺磷酸酐及其制备方法

    公开(公告)号：US3639473A

    公开(公告)日：1972-02-01

    申请号：US3639473D

    申请日：1968-03-15

    Applicant: US NAVY

    Inventor： VENEZKY DAVID L

    IPC: C07F9/30 ,  C07F9/32

    CPC classification number: C07F9/304 ,  C07F9/3294

    Abstract: ACETIC DIPHENYLPHOSPHINIC ANHYDRIDE IS PREPARED BY DISSOLVING DIPHENYPHOSPHINIC ACID IN A LARGE EXCESS OF ACETIC ANHYDRIDE UNDER HEATING TO FORM A SOLUTION AT A TEMPERTURE OF ABOUT 50 TO 60*C. THE MIXED ANHYDRIDE IS ISOLATED BY FLASH EVAPORATION OF THE EXCESS ACETIC ANHYDRIDE AND THE ACETIC ACID FROM THE REACTIO SOLUTION. HIGHER YIELDS OF THE MIXED ANHYDRIDE ARE OBTAINED WHEN A MIXTURE OF THE DIPHENYLPHOSPHINIC ACID AND A LARGE EXCESS OF ACETIC ANHYDRIDE ARE HEATED TO A REFLUX TEMPERATURE OF ABOUT 140*C. IN THE PRESENCE OF AN ADDED SMALL AMOUNT OF ACETIC ACID WHICH IS SUFFICIENT TO REPRESS DISPROPORTIONATION OF THE MIXED ANHYDRIDE AT TEMPERATURES OF ABOUT 100*C. AND HIGHER UP TO THE REFLUX TEMPERATURE.

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