Reduction of ferriprotoporphyrin IX to the ferroderivative by copoly(4-vinylpyridine-N-(p-vinylbenzyl)-3-carbamoyl-1,4-dihydropyridine) in dimethyl sulfoxide
✍ Scribed by Eishun Tsuchida; Etsuo Hasegawa
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1977
- Tongue
- English
- Weight
- 552 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
The copolymer which has both ligand sites (4‐vinylpyridine) and redox sites (N‐(p‐vinylbenzyl)‐3‐carbamoyl‐1,4‐dihydropyridine) was synthesized by the dithionite reduction of the copoly(4‐vinylpyridine‐N‐(p‐vinylbenzyl)‐3‐carbamoylpyridinium chloride) and the reduction of a central ferric‐iron of ferriprotoporphyrin IX by the above‐described copolymer was studied spectrophotometrically in dimethyl sulfoxide. The rate of the reduction by the copolymer was much faster than by N‐benzyl‐3‐carbamoyl‐1,4‐dihydropyridine. This acceleration by the copolymer could be explained by the intramolecular reduction of ferriprotoporphyrin IX which was coordinated by the pyridine residue of the copolymer.