Catalytic Cs<sub>2</sub>CO<sub>3</sub>Promotes “Silyl Method”-Type Polycondensation

• 作者: Claus Vogel Jochen Meier-Haack
• 来源期刊: 高分子化学期刊(英文)
• 学科: 化学
• 关键词: CESIUM Carbonate POLYCONDENSATION Step-Growth Polymerization
• 年，卷（期）: 2012,（1）
• 页码范围: 1-5
• 页数: 5页
• 分类号: O6

摘要

Catalytic amounts of cesium carbonate are sufficient to initiate the “silyl method”-type step-growth polymerization of phenylene-bis-TMS-ethers and -thioethers with activated aryl fluoride monomers, and can thus be used instead of ce-sium fluoride or potassium carbonate. Cesium fluoride is very hygroscopic and potassium carbonate is generally used in equimolar amounts. The efficiency of catalytic amounts of cesium carbonate is demonstrated by the synthesis of poly(phenylene ether ether ketone) and poly(phenylene sulfide sulfone) examples.