Pd(II)-catalyzed copolymerization of a norbornadiene derivative with substituted phenylacetylenes

✍ Scribed by Hiroshi Tamura; Hitoshi Kanamaru; Osamu Hirose; Seika Yamamoto

• Book ID: 102491227
• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 330 KB
• Volume: 18
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.1997.030180805

✦ Synopsis

Abstract

Copolymerizations of diethyl 7‐oxabicyclo[2.2.1]hepta‐2,5‐diene‐2,3‐dicarboxylate (DOHDD) with phenylacetylene (PA) or p‐methoxyphenylacetylene (MeOPA) were successfully performed in chloroform using PdBr~2~ as catalyst. The products of reactivity ratios r~1~ · r~2~ for poly(DOHDD‐co‐PA) and poly(DOHDD‐co‐MeOPA) are 0.026 and 0.0077, respectively. These values suggest a maximum degree of alternating sequences of 86 and 92% in the two systems, hence a high alternating tendency. It is interesting to note that the present copolymerizations occur by combination of different types of monomer, alkene and alkyne.