Polyetherols obtained from 6-aminouracil and oxiranes
✍ Scribed by Elżbieta Chmiel-Szukiewicz
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 166 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Abstract
Reactions of 6‐aminouracil with an excess of oxiranes (ethylene oxide and propylene oxide) in dimethylsulfoxide in the presence of triethylamine as a catalyst leads to polyetherols with a 1,3‐pyrimidine ring. The products are analyzed using IR and ^1^H‐NMR spectroscopies. The physical properties and thermal stability of the prepared polyetherols are investigated. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1466–1472, 2007
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Polyetherols containing s-triazine rings can be obtained in reactions of oxiranes with melamine derivatives. A report on the attempt to replace pentakis(methoxymethyl)melamine with bis(methoxymethyl)melamine in the synthesis is presented. The replacement simplified the procedure by eliminating the s
## Abstract 5 or 7‐Trifluoromethyl‐1,2,3,4‐tetrahydropyrido[2,3‐__d__]pyrimidine‐2,4‐diones **3**, **5**, **10**, **13** and 4‐ or 6‐trifluoromethylpyrazolo[3,4‐__b__]pyridines **15**, **16**, **19**, **21** were prepared from 6‐aminouracils and 5‐aminopyrazoles, respectively, in good yields by the