Synthesis of cross‐linked polyethylene oxide‐acetal macrocycles for solid superbase catalysts |
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| Authors: | Boris A. Trofimov Boris V. Morozova Al'bina I. Mikhaleva Inna V. Tatarinova Marina V. Markova Jochem Henkelmann |
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| Affiliation: | 1. Email:boris trofimiv@irioch.irk.ru;4. A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., Irkutsk 664033, Russia;5. BASF Aktiengesellschaft, Ammoniaklaboratorium ZAR/C, M 311, Ludwigshafen 67056, Germany |
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| Abstract: | A novel long‐chain divinyl ether of tris(diethyleneglycol)‐bisacetal, has been synthesized by electrophilic addition of one molecule of diethylene glycol to two molecules of divinyl ether of diethylene glycol (DVDEG) in the presence of CF3COOH in quantitative yield. The monomer was cationically polymerized (BF3·OEt2, or complex LiBF4·MeO(CH2)2OMe) and copolymerized with DVDEG to deliver solid polymers the yields being 80–100%. The polymers represent the cross‐linked polyether‐polyacetal structures comprising macrocycles. The polymers were treated with 3% solution of KOH or CsOH in methanol to afford solid superbase complexes of KOH (CsOH) with cross‐linked polyether‐polyacetal macrocyclic networks. Preliminary tests have shown the complexes to be active catalysts for ethynylation of acetones and prototropic isomerization of methyl propargyl ethers to allenyl methyl ethers. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
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| Keywords: | tris(diethyleneglycol)‐bisacetal cation polymerization polymer superbases |
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