[EN] SYNTHESIS OF DIAMIDO GELLANTS BY USING DANE SALTS OF AMINO ACIDS<br/>[FR] SYNTHÈSE DE DIAMIDO GÉLIFIANTS À L'AIDE DE SELS DE DANE D'ACIDES AMINÉS
申请人:EVONIK INDUSTRIES AG
公开号:WO2013178450A1
公开(公告)日:2013-12-05
The invention relates to a method for the synthesis of a compound according to formula I comprising the following steps: a) reacting a Dane salt according to formula II and a Dane salt according to formula III with a coupling reagent; b) adding a diamine according to formula IV to the reaction mixture; and c) adding an acid to the reaction mixture to adjust the p H value of the reaction to <7; wherein L represents a C2-C20 alkyl group, a C6-C20 aryl group, or a C7–C20 alkylaryl group; R1 and R2 can be identical or different and represent a hydrogen atom, a C1-C4 alkyl group, a C1-C4 hydroxyalkyl group, a C1-C4 thioether group, a C6-C20 aryl group, a C7–C20 alkylaryl group, a C7–C20 alkylhydroxyaryl group, a C4–C20 alkylheteroaryl group with 1 to 4 heteroatoms; or a C1-C4 alkylcarboxylic moiety, which may be an acid, an amide, or which may be esterified with a C1-C6 alkyl group or a C7-C20 alkylaryl group; R3 represents a C1-C4 alkyl group; R4 represents a hydrogen atom, or a C1-C4 alkyl group; R5 represents a C1-C4 alkyl group; and X represents an alkali metal.
该发明涉及一种合成按照式I的化合物的方法,包括以下步骤:a) 用偶联试剂反应式II的Dane盐和式III的Dane盐;b) 将式IV的二胺加入反应混合物;c) 向反应混合物中添加酸以调整反应的pH值至<7;其中L代表C2-C20烷基、C6-C20芳基或C7-C20烷基芳基;R1和R2可以相同也可以不同,并代表氢原子、C1-C4烷基、C1-C4羟基烷基、C1-C4硫醚基、C6-C20芳基、C7-C20烷基芳基、C7-C20烷基羟基芳基、带有1到4个杂原子的C4-C20烷基杂芳基;或者C1-C4烷基羧基部分,可以是酸、酰胺,或者可以与C1-C6烷基或C7-C20烷基芳基酯化;R3代表C1-C4烷基;R4代表氢原子或C1-C4烷基;R5代表C1-C4烷基;X代表碱金属。