Assessment of the Reusability of Pd Complexes Supported on Fluorous Silica Gel as Catalysts for Suzuki Couplings
Assessment of the Reusability of Pd Complexes Supported on Fluorous Silica Gel as Catalysts for Suzuki Couplings
复制标题
氟硅胶负载钯配合物作为铃木联轴器催化剂的可重复使用性评估
DOI：
10.1002/ejoc.200500281
复制
发表时间：
2005
影响因子：
2.8
通讯作者：
W. Bannwarth
中科院分区：
文献类型：
--
作者：
C. Tzschucke;V. Andrushko;W. Bannwarth
研究了以氟硅胶为载体的不同全氟标记的钯配合物作为Suzuki反应催化剂的催化性能。测量负载络合物再循环时的反应速率以确定催化剂的可重复使用性。还比较了吸附在FSG和未改性硅胶上的全氟标记和未标记的络合物。而与二甲氧基乙烷（DME）作为溶剂的催化活性降低后，重复使用，显着的活性保留与回收的催化剂在水中的反应。在催化剂负载量为0.001摩尔%的情况下，获得高达526000的TON。（© Wiley-VCH Verlag GmbH & Co. KGaA，69451魏因海姆，德国，2005）
A thorough investigation of different perfluoro-tagged Pd complexes supported on fluorous silica gel (FSG) as catalysts for Suzuki reactions is presented. The rates of reaction upon recycling of the supported complexes were measured in order to determine the reusability of the catalysts. Perfluoro-tagged and untagged complexes adsorbed on FSG and unmodified silica gel were also compared. While with dimethoxyethane (DME) as a solvent the catalytic activity decreased upon reuse, significant activity was retained with recycled catalysts for reactions in water. With catalyst loadings of 0.001 mol-%, TONs as high as 526000 were obtained. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)