Preparation of Bifunctional Mesoporous Silica Nanoparticles by Orthogonal Click Reactions and Their Application in Cooperative Catalysis
作者:Arne T. Dickschat、Frederik Behrends、Martin Bühner、Jinjun Ren、Mark Weiß、Hellmut Eckert、Armido Studer
DOI:10.1002/chem.201200499
日期:2012.12.21
The synthesis of bifunctionalmesoporoussilicananoparticles is described. Two chemically orthogonal functionalities are incorporated into mesoporoussilica by co‐condensation of tetraethoxysilane with two orthogonally functionalized triethoxyalkylsilanes. Post‐functionalization is achieved by orthogonal surface chemistry. A thiol–ene reaction, Cu‐catalyzed 1,3‐dipolar alkyne/azide cycloaddition,
Convenient route to water-sensitive sol–gel precursors using click chemistry
作者:Nirmalya Moitra、Joël J. E. Moreau、Xavier Cattoën、Michel Wong Chi Man
DOI:10.1039/c0cc03417g
日期:——
The CuAAC-âclickâ reaction under anhydrous conditions is reported as a new tool for the preparation of moisture-sensitive triethoxysilyl compounds that are obtained in 5 minutes in excellent yield with simple purification.
A simple access to ω-aminoalkyltrialkoxysilanes: Tunable linkers for self-organised organosilicas
作者:Benoît P. Pichon、Michel Wong Chi Man、Catherine Bied、Joël J.E. Moreau
DOI:10.1016/j.jorganchem.2005.11.036
日期:2006.3
A simple route to omega-aminoalkyltriethoxysilanes with variable alkylene chain lengths, (EtO)(3)Si(CH2)(n)NH2 (n = 5, 11) is described. These silyl linkers have been used to prepare urea-based compounds with H-bonding and hydrophobic interactions which enable the self-assembly of the molecules. These molecular precursors are suitable for the obtention of nano-structured hybrid silicas. (c) 2005 Elsevier B.V. All rights reserved.
Efficient and multi-function compatible click-reaction of organosilanes
The synthesis of organotriethoxysilanes by click chemistry was studied using the recyclable, multidentate catalyst [Cu(C(18)tren)]Br. For the evaluation, alkyne precursors containing some of the more common organic functions were reacted with a triethoxy silyl group containing azide. The procedure allowed the isolation of the desired products in high yields and high purity. Especially remarkable is the facility of the catalyst removal by simple filtration and evaporation. The catalyst is concluded to be ideal for the synthesis of moisture sensitive organotriethoxysilanes. (C) 2020 Elsevier Ltd. All rights reserved.