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    • 1. 发明公开
    • SYNTHESIS OF DIAMIDO GELLANTS BY USING AMINO ACID N-CARBOXYANHYDRIDES
    • 合成氨基甘氨酸氨基转移酶
    • EP2855423A1
    • 2015-04-08
    • EP13724207.9
    • 2013-05-13
    • Evonik Industries AG
    • BINDI, MartinHERMANN, RolandKNAUP, Günter
    • C07C231/02C07D263/44C11D3/32C11D7/32
    • C07C231/02C07C2601/14C07D263/44C07C237/20C07C237/10
    • The invention relates to a method for the synthesis of a compound according to formula I comprising the following steps: a) reacting a N-carboxyanhydride according to formula II and a N-carboxy- anhydride according to formula III with a diamine according to formula IV and b) adding an acid to the reaction to adjust the pH value of the reaction to 2 -C
      20 alkyl group, a C
      6 -C
      20 aryl group, or a C
      7 -C
      20 alkylaryl group; and R
      1 and R
      2 can be identical or different and represent a hydrogen atom, a C
      1 -C
      4 alkyl group, a C
      1 -C
      4 hydroxyalkyl group, a C
      1 -C
      4 thioether group, a C
      6 -C
      20 aryl group, a C
      7 -C
      20 alkylaryl group, a C
      7 -C
      20 alkylhydroxyaryl group, a C
      4 -C
      20 alkylheteroaryl group with 1 to 4 heteroatoms; or a C
      1 -C
      4 alkylcarboxylic moiety, which may be an acid, an amide, or which may be esterified with a C
      1 -C
      6 alkyl group or a C
      7 -C
      20 alkylaryl group.
    • 本发明涉及一种合成式I化合物的方法,包括以下步骤:a)使根据式II的N-羧酸酐和根据式III的N-羧酸酐与根据式IV的二胺反应 和b)向反应物中加入酸以将反应的pH值调节至<7; 其中L表示C2-C20烷基,C6-C20芳基或C7-C20烷基芳基; R1和R2可以相同或不同,表示氢原子,C1-C4烷基,C1-C4羟烷基,C1-C4硫醚基,C6-C20芳基,C7-C20烷基芳基, C 7 -C 20烷基羟基芳基,具有1至4个杂原子的C 4 -C 20烷基杂芳基; 或C 1 -C 4烷基羧酸部分,其可以是酸,酰胺或可以被C 1 -C 6烷基或C 7 -C 20烷基芳基酯化。