Amine-catalyzed polycyclotrimerization of arylene bipropiolate: A metal-free and regioselective route to hyperbranched polymer

• 来源期刊: 中国科学B辑（英文版）
• 年，卷（期）: 2008,（8）
• 页码范围: 705-708
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s 11426-008-0086-4

摘要

This paper presents a new synthetic route to hyperbranched polymer. An arylene bipropiolete monomer, dimethylmethylenebis(1,4-phenylene) bipropiolate, was prepared by a one-step esterification reaction of bisphenol A with propiolic acid. Polycyclotrimrtization of the monomer was effected by reflux in di-methylformamide (DMF), producing a soluble hyperbranched poly(aroxycarbonylphenylene) in a good yield. The polymer was perfectly branched with a degree of branching of 100%.