期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 43, 期 2, 页码 843-857出版社
SPRINGER
DOI: 10.1007/s11164-016-2668-7
关键词
Heteropolyacids; Cyclodextrin nanosponge; Heterogeneous catalyst; Xanthenes
资金
- Iran Polymer and Petrochemical Institute
- Alzahra University
- INSF
The nanoporous framework of a cyclodextrin nanosponge was used as catalyst for accelerating the one-pot, three-component reaction of dimedone, aldehyde, and phenols for synthesis of xanthene derivatives. Moreover, the nanocavities of cyclodextrin nanosponges were exploited for immobilization of heteropolyacids through the wet impregnation method. This catalyst exhibited superior catalytic performance compared to the bare cyclodextrin nanosponge. Despite the good catalytic activity, the leaching of the catalytic species did not allow efficient recovery and reusability. To circumvent this problem, the cyclodextrin nanosponge was amine-functionalized prior to heteropolyacid immobilization. The results proved that the amine functionalities had an effective role in preserving the catalytic species and improving the reusability through decreasing the leaching time. This catalyst was used for synthesis of a variety of xanthenes in aqueous media. The catalytic amount of catalyst afforded the desired product in excellent yields and with a relatively short reaction time. The results suggested cyclodextrin nanosponge-based catalysts as potential candidates for promoting chemical reactions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据