【作者】 尹雅琴；

【导师】 蔡春；

【作者基本信息】 南京理工大学 ， 化学工艺， 2007， 硕士

【摘要】 用相应的稀土氯化物或氧化物和全氟辛基磺酸反应来制备了RE（OPf）₃（RE=Yb，Sc，Y，La，Eu，Tm）。并以DSC、ICP、IR和元素分析等手段对其进行了表征。以Yb（OPf）₃为催化剂，选取全氟萘烷(C₁₀F₁₈)为全氟溶剂，对Knoeveagel缩合反应、Diacetates缩合反应及Baylis-Hillmann缩合反应进行了研究。研究表明Yb（OPf）₃和全氟萘烷(C₁₀F₁₈)组成的氟两相体系能有效的催化上述缩合反应。考察了温度、时间、催化剂用量和氟相与有机相相比等条件对Knoeveagel缩合反应和Diacetates缩合反应的影响。对反应机理进行了推测。含有催化剂的氟相通过简单的相分离，就可回收利用，氟相重复使用5次，其催化活性无明显降低。更多还原

【Abstract】 The catalysts of rare earth（Ⅲ） perfluorooctanesulfonates （RE（OPf）₃, RE=Yb, Sc, La,Eu, Tm, Y） were prepared from either rare earth chlorides（Ⅲ） or oxides andperfluorooctane sulfonic acid. The perflates obtained were characterized by DSC, ICP, IR,and elemental analysis.Yb（OPf）₃ acted as a efficient catalyst for Knoevenagel condensation, Diacetatescondensation, Baylis-Hillmann condensation, in fluorous biphasic system usingperfluorodecalin (C₁₀F₁₈, cis and trans-mixture) as fluorous solvent. Effects of reactiontemperature, reaction time, amount of catalyst, and the ratio of fluorous phase/organicphase on Knoevenagel and Diacetates reactions were investigated. The reactionmechanisms were proposed. By simple phase separation the fluorous phase containingcatalyst could be re-utilized up to five times only with a little decrease in activity.更多还原