Premium
Cover Feature: Efficient and Spatially Controlled Functionalization of SBA‐15 and Initial Results in Asymmetric Rh‐Catalyzed 1,2‐Additions under Confinement (ChemCatChem 10/2021)
Author(s) -
Beurer AnnKatrin,
Kirchhof Manuel,
Bruckner Johanna R.,
Frey Wolfgang,
Baro Angelika,
Dyballa Michael,
Giesselmann Frank,
Laschat Sabine,
Traa Yvonne
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202100541
Subject(s) - silanol , catalysis , mesoporous material , surface modification , chemistry , mesoporous silica , chemical engineering , materials science , combinatorial chemistry , nanotechnology , organic chemistry , engineering
The Cover Feature shows asymmetric catalysis on mesoporous silica, which is selectively functionalized in a spatially controlled manner with highly selective complex catalysts on the mesopore walls. In their Full Paper, A.‐K. Beurer et al. describe a new method, which ensures with a special control step that exclusively the mesopore surface is functionalized with a clickable linker. This makes it possible to study unambiguously confinement effects during catalyzed reactions. First, the silanol groups on the particle surface and in the pore entrances of the SBA15 are passivated. Then, the template is removed by solvent extraction and, afterwards, the pore walls are functionalized with 3‐azidopropyltriethoxysilane before the catalyst is clicked on the pore walls. In initial experiments of asymmetric Rh‐catalyzed 1,2‐addition, a high enantiomeric excess is obtained.More information can be found in the Full Paper by A.‐K. Beurer et al.