An efficient Pd–NHC catalyst system in situ generated from Na₂PdCl₄ and PEG-functionalized imidazolium salts for Mizoroki–Heck reactions in water

• Nan Sun,
• Meng Chen,
• Liqun Jin,
• Wei Zhao,
• Baoxiang Hu,
• Zhenlu Shen and
• Xinquan Hu

Beilstein J. Org. Chem. 2017, 13, 1735–1744, doi:10.3762/bjoc.13.168

• Nan Sun Meng Chen Liqun Jin Wei Zhao Baoxiang Hu Zhenlu Shen Xinquan Hu College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China 10.3762/bjoc.13.168 Abstract Three PEG-functionalized imidazolium salts L1–L3 were designed and prepared from commercially available

• 10,000. Keywords: aqueous homogeneous catalysis; Mizoroki–Heck reaction; Na2PdCl4; PEG-functionalized imidazolium salts; Introduction Nowadays, both increasing environmental concerns and drastic commercial competition are the driving forces to develop more sustainable and economic processes for

• linear long-chain structure of PEGs could wrap and stabilize the metal center and thus significantly enhanced the catalytic efficiency [70]. Therefore, we chose PEG as functionalization group to prepare water soluble catalysts. The PEG-functionalized imidazolium salts L1–L3 were prepared via a three-step