中文摘要：

对七水合三氯化铈-碘化钠（CeCl3·7H2O-NaI）化邻氨基苯硫酚、对氯邻氨基苯硫酚、间氨基苯硫酚、对氨基苯硫酚和对甲基苯硫酚与α,β-不饱和酮（1a-1o）的迈克尔加成反应进行了系统研究.结果表明, CeCl3·7H2O-NaI-SiO2复合催化剂能有效催化邻氨基苯硫酚及对氯邻氨基苯硫酚与α,β-不饱和酮（1a-1o）的迈克尔加成反应.在优化的反应条件下,即 n（CeCl3·7H2O）： n（NaI）： n（α,β-不饱和酮）=1：2：2, m（CeCl3·7H2O）：m（SiO2）=1：1.6,三氯甲烷作溶剂,反应温度为回流温度,反应时间为2 h,反应可达到中等产率（43.1%-58.8%）.催化剂重复使用4次基本稳定.此外,提出了可能的催化机理.

英文摘要：

In this paper, the Michael additions of o-aminothiophenol, p-chloro-o-aminothiophenol, m-amino-thiophenol, p-aminothiophenol and p-methylthiophenol to α,β-unsaturated ketones （ 1a-1o ） catalyzed by CeCl3·7H2 O-NaI were systematically studied. The results show that the CeCl3·7H2 O-NaI-SiO2 system works well for the reaction of the o-aminothiophenol and p-chloro-o-aminothiophenol to the α,β-unsaturated ketones （1a-1o）. Under the optimal reaction conditions, i. e. , n（CeCl3·7H2O）：n（NaI）：n（α,β-unsaturated ke-tones）=1：2：2, m（CeCl3 ·7H2O）：m（SiO2）=1：1.6, the reaction time of 2 h, at reflux temperature and CHCl3 as solvent, the reactions proceed with moderate yields （ 43.1%-58.8%） . The catalyst is basically stable after recycling the conjugate addition reaction four times. In addition, the possible catalytic mechanism was proposed.