An efficient heterogeneous Heck reaction promoted by a new assembled catalyst of palladium and non-cross-linked amphiphilic polymer

✍ Scribed by Yoichi M.A Yamada; Koji Takeda; Hideyo Takahashi; Shiro Ikegami

• Publisher: Elsevier Science
• Year: 2003
• Tongue: French
• Weight: 217 KB
• Volume: 44
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(03)00220-x

✦ Synopsis

A newly assembled insoluble catalyst 1b composed of palladium and non-cross-linked amphiphilic polymer was developed. It was named PdAS-V: a supramolecular complex of (NH 4 ) 2 PdCl 4 (2) and poly[(N-isopropyla6 crylamide) 5 -co-(4-diphenyls6 tyrylphosphine)] (3b). The use of 8.0×10 -7 -5.0×10 -5 mol equiv. of PdAS-V efficiently catalyzed the Heck reaction of aryl iodides with acrylates and styrenes. The turnover number of PdAS-V reached up to 1,150,000, and the catalyst was recycled five times without any decrease in its activity.