Single step room temperature oxidation of poly(ethylene glycol) to poly(oxyethylene)-dicarboxylic acid
✍ Scribed by B. S. Lele; M. G. Kulkarni
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 156 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Poly(oxyethylene)-dicarboxylic acids were obtained in high yields by room temperature oxidation of poly(ethylene glycol)s of molecular weights in the 4000 -100,000 range using Jone's reagent (CrO 3 and H 2 SO 4 ) as the oxidizing agent. Oxidation by-products from the reaction mixture were eliminated by adsorbing chromium salts onto activated charcoal. The acid values of poly(oxyethylene)-dicarboxylic acids so synthesized were in agreement with the theoretical values. Poly(oxyethylene)-dicarboxylic acids were characterized by 1 H-NMR, IR spectroscopy. Spectral data were in agreement with the proposed structures of products. In summary, a convenient, one pot method for the synthesis of a wide range of poly(oxyethylene)-dicarboxylic acids was developed.