Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur 700 032, India.
Dalton Trans. 2011 May 21;40(19):5228-35. doi: 10.1039/c0dt01771j. Epub 2011 Apr 4.
A new functionalized mesoporous organosilica has been designed via Schiff-base condensation of furfural and 3-aminopropyltriethoxy-silane (APTES) followed by its hydrothermal co-condensation with tetraethylorthosilicate (TEOS) in the presence of a cationic surfactant CTAB. Subsequent reaction of this mesoporous organosilica with Cu(OAc)(2) in absolute ethanol leads to the formation of a new Cu(II)-grafted mesoporous organosilica catalyst 1. Powder XRD, HR TEM, FE SEM, N(2) sorption and FT IR spectroscopic tools are used to characterize the materials. This Cu-anchored mesoporous material acts as an efficient, reusable catalyst in the aryl-sulfur coupling reaction between aryl iodide and thiophenol for the synthesis of value added diarylsulfides.
一种新型的功能化介孔有机硅通过糠醛和 3-氨丙基三乙氧基硅烷（APTES）的席夫碱缩合反应设计而成，然后在阳离子表面活性剂 CTAB 的存在下与正硅酸乙酯（TEOS）进行水热共缩合。随后，将这种介孔有机硅与 Cu(OAc)(2)在无水乙醇中反应，生成一种新型的 Cu(II)接枝介孔有机硅催化剂 1。采用粉末 XRD、高分辨率透射电子显微镜（HR TEM）、场发射扫描电子显微镜（FE SEM）、N2 吸附和傅里叶变换红外光谱（FT IR）等手段对材料进行了表征。这种 Cu 锚定的介孔材料在芳基碘化物和硫酚之间的芳基-硫偶联反应中作为一种高效、可重复使用的催化剂，用于合成有价值的二芳基硫醚。
