含有亲水取代基的手性salen-manganese(Ⅲ)配合物的合成与催化(英文)  

Synthesis and catalysis of chiral salen-manganese(Ⅲ) complexes featuring hydrophilic substituents

作　　者：孙杨[1] 唐宁[1] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000

出　　处：《兰州大学学报（自然科学版）》2007年第4期68-73,共6页Journal of Lanzhou University(Natural Sciences)

基　　金：Supported by the National Natural Science Foundation of China(20571035) and the Natural Science Foundation of Gansu Province(3ZS051-A25-003).

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.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.

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 

分 类 号：O743.53[理学—晶体学]