Ionic liquid-functionalized amphiphilic Janus nanosheets afford highly accessible interface for asymmetric catalysis in water

Autor:	Chaoping Li, Zewei Liu, Yibing Pi, Su Liu, Jingwen Feng, Shiye Li, Rong Tan
Rok vydání:	2021
Předmět:	010405 organic chemistry Chemistry Enantioselective synthesis 010402 general chemistry 01 natural sciences Combinatorial chemistry Catalysis 0104 chemical sciences chemistry.chemical_compound Reaction interface Ionic liquid Amphiphile Janus Physical and Theoretical Chemistry Porosity Linker
Zdroj:	Journal of Catalysis. 395:236-245
ISSN:	0021-9517
DOI:	10.1016/j.jcat.2021.01.022
Popis:	High oil/water interfacial area together with accessible interfaces for regents is the key to achieving efficient asymmetric catalysis in water. Herein, by taking advantage of the excellent interfacial activity of Janus nanosheets (JNS), as well as the unique compatibility of imidazolium ionic liquid (IL), we developed a series of IL-functionalized amphiphilic Janus mesosilica nanosheets which afford highly accessible reaction interfaces for highly enantioselective sulfoxidation in water. The JNS-typed chiral salen TiIV catalysts were prepared by selectively decorating hydrophobic chiral salen TiIV complex on one side of Janus mesosilica nanosheets through the imidazolium-based IL linker. Benefiting from the two-dimensional porous Janus structure, as well as the compatible IL linker, the IL-tagged JNS catalysts afforded high oil/water interfacial areas and highly accessible reaction interface for sulfides and H2O2, significantly accelerating asymmetric sulfoxidation in water using H2O2 as an oxidant. In addition, they can be facilely recovered for stable reuse by simple centrifugation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::682caca8cdb6273697de2658b58ba2b8 https://doi.org/10.1016/j.jcat.2021.01.022 Zobrazit plný text záznamu Full Text from ScienceDirect