Probing the Regiochemistry of Acrylate Catalytic Insertion Polymerization via Cyclocopolymerization of Allyl Acrylate and Ethylene

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• 作者：Jean-Christophe Daigle ; Laurence Piche ; Alexandre Arnold ; Jerome P. Claverie
• 刊名：ACS Macro Letters
• 出版年：2012
• 出版时间：March 20, 2012
• 年：2012
• 卷：1
• 期：3
• 页码：343-346
• 全文大小：237K
• 年卷期：v.1,no.3(March 20, 2012)
• ISSN：2161-1653

文摘

When palladium phosphine sulfonate catalysts were used, ethylene and allyl acrylate were copolymerized. The copolymer structure was analyzed by Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) and was found to contain both 未-valerolactone and 纬-butyrolactones inserted within the chain. These cyclic structures were determined to be the outcome of 1,2 allyl insertions and 2,1 acrylate insertions except when the acrylate was cyclopolymerized: in this case, regiochemistry of the insertion was 1,2. This first example of cyclopolymerization with Pd phosphine sulfonate catalysts outlines the extraordinary versatility of this family of compounds and paves the way to new polyolefins containing complex repeat units built in.