A facile cesium fluoride-mediated synthesis of aromatic polyethers from bisphenols and activated aromatic dihalides

✍ Scribed by Yoshio Imai; Hironobu Ishikawa; Ki-Hong Park; Masa-Aki Kakimoto

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 153 KB
• Volume: 35
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19970730)35:10<2055::aid-pola21>3.0.co;2-e

✦ Synopsis

A facile method for the synthesis of high-molecular-weight aromatic polyethers was developed with the use of cesium fluoride as a base. The high-temperature solution polycondensation between bisphenols and activated aromatic dihalides with cesium fluoride in polar aprotic solvents readily afforded a series of aromatic polyethers having inherent viscosities of 0.5-1.0 dL/g under essentially neutral and milder reaction conditions, compared with the conventinal method using alkali hydroxides or alkali carbonates.