首页> 外文期刊>Chemistry: A European journal >SBA-15-type organosilica with 4-mercapto-N,N-bis-(3-Si-propyl)butanamide for palladium scavenging and cross-coupling catalysis
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SBA-15-type organosilica with 4-mercapto-N,N-bis-(3-Si-propyl)butanamide for palladium scavenging and cross-coupling catalysis

机译:具有4-巯基-N,N-双-(3-Si-丙基)丁酰胺的SBA-15型有机硅用于钯的清除和交叉偶联催化

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摘要

This work describes the synthesis of novel functional silica materials with difunctional thiol-amide substructures and featuring regular architectures on a mesoscopic level. The functional materials were synthesised by both one-pot co-condensation and post-grafting approaches. The thiol groups confined in the matrix were found to be efficient for palladium entrapment, leading to highly active and reusable heterogeneous catalysts for Sonogashira and Suzuki-Miyaura cross-coupling reactions. This work evidences the crucial role of both the thiol precursor and the condensation degree of the silica scaffold in view of the design of stable and reusable tailor-made mesoporous catalytic silica materials.
机译:这项工作描述了具有双官能硫醇酰胺亚结构并在介观水平上具有规则结构的新型功能二氧化硅材料的合成。通过一锅共缩合和接枝后方法合成功能材料。发现限制在基质中的巯基对于钯的截留是有效的,从而导致用于Sonogashira和Suzuki-Miyaura交叉偶联反应的高活性和可重复使用的非均相催化剂。鉴于稳定和可重复使用的量身定制的介孔催化二氧化硅材料的设计,这项工作证明了硫醇前体和二氧化硅支架的缩合度都至关重要。

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