硫化氢-炔反应体系及其产物性能的研究  

The mechanism of hydrogen sulfide-alkyne reaction and its product property

作　　者：龙贺年 毛俊轩[1] 王跃川[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《化学研究与应用》2014年第5期733-736,共4页Chemical Research and Application

摘　　要：利用迈克尔(Michael)加成反应机理,对硫化氢(H2S)与丙炔酸乙酯反应体系的活性进行了研究。用核磁共振氢谱和质谱对产物1,1'-二丙烯酸乙酯硫醚的分子结构进行了表征,并对1,1'-二丙烯酸乙酯硫醚的光固化性能进行了研究。结果表明,H2S与EP只能加成一次,生成丙烯酸乙酯硫醚结构的产物;产物1,1'-二丙烯酸乙酯硫醚结构稳定,不能与巯基进行亲核加成反应,也不能进行自由基加成反应。利用该研究结果,可以用多官能度邻酯基炔烃衍生物与硫化氢进行迈克尔加成反应,合成具有多硫醚结构的高分子化合物,用于材料合成的分子设计。In this paper,The activity of the reaction between hydrogen sulfide and ethyl propiolate were studied,based on the mecha-nism of Michael addition reaction. The product,1,1′-diethyl acrylate thioether,was characterized by 1 H NMR and mass spectrome-try,and its photo-cured properties were investigated as well. It is found that the hydrogen sulfide and ethyl propiolate can react only once,to form ethyl acrylate sulfide. The 1,1′-diethyl acrylate thioether is highly stable,and therefore neither the nucleophilic addi-tion reaction with thiol nor the free radical addition reaction can take place. Based on this conclusion,the Michael addition reaction between the derivatives of multi-functional ortho ester alkyne and hydrogen sulfide can be used to prepare polysulfide.

关 键 词：邻酯基炔烃衍生物 反应活性 光固化性能 分子设计 

分 类 号：O613.51[理学—无机化学] O623.124[理学—化学]