【作者】 游胜勇； 戴润英； 陈衍华； 李向阳；

【Author】 Shengyong You;Runying Dai;Yanhua Chen;Xiangyang Li;Institute of Applied Chemistry,Jiangxi Academy of Science;Department of Chemistry, Jiangxi Agricultural University;

【机构】 江西省科学院应用化学研究所； 江西农业大学理学院化学系；

【摘要】 共轭有机硅化合物具有独特结构与性能,是功能材料重要的聚合单体,具有很高的科学研究价值,因而其合成方法受到了广泛关注。本论文采用氯硅烷单体与取代烯烃、炔烃发生交叉偶联反应,以预先合成的四三(2-哌嗪基苯基)膦钯作为催化剂制得共轭有机硅化合物,并考察电子、取代、空间等效应对交叉偶联反应的影响。结果表明,具有大位阻和强供电子的四三(2-哌嗪基苯基)膦钯可高效催化氯硅烷与取代烯烃、炔烃的偶联反应,反应条件温和,共轭有机硅化合物的收率为70-85%。更多还原

【Abstract】 The conjugate organosilicon compounds is an important monomer for funtional materials due to its unique structure and properties. The synthesis method of conjugate organosilicon compounds is widely concerned by researchers owing to its high scientific value. In this paper, the conjugate organosilicon compounds was obtained by the cross-coupling reaction with the chlorosilane and substituted alkene or alkyne, catalyzed with a prepared palladium catalyst Pd(L3)4. The influence of electronic effect, repalce effect, space effect on the cross-coupling reaction were discussed. The results show that Pd(L3)4 with large steric hindrance and strong electron-donating could be catalyzed effectively the cross-coupling reaction with the chlorosilane and unsaturated hydrocarbon. The yield of conjugate organosilicon compounds is 70%–85% with the mild reaction conditions.更多还原