New degradable polyethers based on the tautomerism of pyrimidine bases in the main chain
β Scribed by Seiji Sasaki; Koichi Kondo
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 205 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0887-624X
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β¦ Synopsis
The tautomerism of pyrimidine bases was applied to a new type of polymer synthesis that was achieved by the dehydrochlorination of dichloropyrimidines with diols to give polyethers containing a 2,4-pyrimidine structure in the main chain. The polymer decomposed to uracil or thymine under an acidic condition but not under a basic condition. A degradation based on tautomerism could be useful for a new kind of degradable polymer synthesis and polymer drug-delivery system.
π SIMILAR VOLUMES
Mo(CO) 6 was reacted with the Schiff base ligand obtained by condensation reaction of 2-acetyl-or benzoylpyridine with poly(propylene glycol)bis(2-aminopropyl ether) to obtain polymeric, dinuclear metal tetracarbonyl compounds. The long-chain Schiff base complexes are highly soluble even in non-pola