Pd nanoparticles immobilized on poly(NIPAM-co-4-VP) hydrogel: Highly active and reusable catalyst for carbon–carbon coupling reactions in water
作者:Yongwoo Lee、Myeng Chan Hong、Hyunseok Ahn、Jeongmok Yu、Hakjune Rhee
DOI:10.1016/j.jorganchem.2014.07.013
日期:2014.10
with a lower critical solution temperature (LCST) in water. Pd nanoparticles were immobilized on these poly(NIPAM-co-4-VP) hydrogels. The heterogeneous Pd catalyst showed high catalytic activities for carbon–carbon coupling reactions, such as Suzuki–Miyaura, Heck–Mizoroki, and Sonogashira coupling reactions in water. The Pd catalyst immobilized on poly(NIPAM-co-4-VP) hydrogel (NIPAM:4-VP = 1:1 M ratio)
聚(N-异丙基丙烯酰胺-co-4-乙烯基吡啶)[聚(NIPAM-co-4-VP)]共聚物在水中具有较低的临界溶液温度(LCST),具有相反的温度溶解度。钯纳米颗粒固定在这些聚(NIPAM-co-4-VP)水凝胶上。多相钯催化剂对水中的碳-碳偶合反应具有很高的催化活性,例如铃木-宫浦,赫克-米佐罗基和Sonogashira偶合反应。固定在聚(NIPAM-co-4-VP)水凝胶上的Pd催化剂(NIPAM:4-VP = 1:1 M比例)显示出优异的可回收性和出色的碳-碳偶联反应收率。