Fe3O4 nanoparticles through hexane-1,6-diyldicarbamate linker afforded a powerful and reusable heterogeneous phase-transfer catalysis which was successfully used for regioselective ring opening of epoxides with azide and nitrite anions in aqueous medium. The new catalyst can readily be recovered by simple magnetic decantation and recycled several times without appreciable loss of catalytic activity
通过己烷-1,6-二基二
氨基甲酸酯连接基将聚
乙二醇取代的1-甲基
咪唑溴化铵固定在磁性Fe 3 O 4纳米颗粒的表面上,提供了有力且可重复使用的异相转移催化,该催化转移反应已成功用于
环氧化物的区域选择性开环
水性介质中的
叠氮化物和
亚硝酸根阴离子。通过简单的磁倾析法可以很容易地回收新催化剂,并循环使用几次,而不会明显丧失催化活性。