Palladium Loaded Dendronized Polymer as Efficient Polymeric Sustainable Catalyst for Heck Coupling Reaction
作者:K. Hiba、G. Anjali Krishna、S. Prathapan、K. Sreekumar
DOI:10.1007/s10562-021-03767-6
日期:2022.6
the other palladium-based catalysts. Energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, UV–Visible spectroscopy, and X-ray photoelectron spectroscopy were used to confirm the successful synthesis of the new catalyst. It was used as a homogeneous palladium catalyst for Heck coupling reaction between olefins and differently substituted aryl halides and the products were isolated
通过在室温下在甲醇中将乙酸钯加入到树枝状聚合物中来合成掺有钯的胺官能化树枝状聚合物。钯物质通过与氨基官能团的配位被固定在树枝状结构上。新开发的树枝状体系在低生成水平本身显示出高钯含量,发现为4.19 mmol / g。这远高于其他钯基催化剂。能量色散 X 射线光谱、傅里叶变换红外光谱、紫外-可见光谱和 X 射线光电子能谱用于确认新催化剂的成功合成。它用作烯烃与不同取代芳基卤化物之间的Heck偶联反应的均相钯催化剂,并以高收率分离产物。分离的产物呈反式构型,表明新开发的催化体系具有选择性。此外,该催化剂体系可重复使用多达 9 次,而其催化活性并未显着降低。催化位点的易接近性、稳定性、抗金属浸出性、高催化活性和显着的立体选择性以及少量催化剂都归功于树枝状载体。对所有通过Heck偶联反应获得的二苯乙烯衍生物与DprE1蛋白进行对接研究,研究其潜在的抗结核活性。