| 含有亲水取代基的手性salen-manganese(Ⅲ)配合物的合成与催化 |
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| 引用本文： | 孙杨,唐宁.含有亲水取代基的手性salen-manganese(Ⅲ)配合物的合成与催化[J].兰州大学学报(自然科学版),2007,43(4):68-73. |
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| 作者姓名： | 孙杨 唐宁 |
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| 作者单位： | 兰州大学,化学化工学院,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金，甘肃省自然科学基金 |
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| 摘 要： | 合成了两个新型的手性salen-manganese(Ⅲ)配合物,在分别以吡啶氮氧化物和醋酸铵为助催化剂的条件下,运用于催化茚的不对称环氧化反应.以次氯酸钠为氧化剂,在水和二氯甲烷双相的反应体系中,得到了中等到良好的对映选择性以及可以接受的反应产率.由于在salen-manganese(Ⅲ)基体结构的5,5'位引入了亚甲胺基,因此,这两个环氧化催化剂可能具有某种相转移能力.
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| 关 键 词： | 不对称环氧化 salen-manganese(Ⅲ) 对映选择性 助催化剂 亲水取代基 salen- manganese(Ⅲ) |
| 文章编号： | 0455-2059（2007）04-0068-06 |
| 修稿时间： | 2006-09-12 |
Synthesis and catalysis of chiral salen-manganese(Ⅲ) complexes featuring hydrophilic substituents |
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| SUN Yang,TANG Ning.Synthesis and catalysis of chiral salen-manganese(Ⅲ) complexes featuring hydrophilic substituents[J].Journal of Lanzhou University(Natural Science),2007,43(4):68-73. |
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| Authors: | SUN Yang TANG Ning |
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| Institution: | College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Two new chiral salen-manganese(Ⅲ) complexes were synthesized and employed in the enantioselective epoxidation of indene in the presence of pyridine N-oxide and ammonium acetate as cocatalysts, respectively. Moderate to excellent enantioselectivity and acceptable yields were achieved when NaClO had been used as the terminal oxidant under CH2Cl2/H2O biphasic media. These two epoxidation catalysts should have certain phase-transfer capability due to the methylene aminoalkyl groups on the 5,5'-positions of their manganese salen matrixes. |
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| Keywords: | asymmetric epoxidation enantioselectivity co-catalyst hydrophilic substituents |
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