ISSN:
0887-624X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Poly(N-acyl ethylenimine) of various molecular weights was synthesized by the cationic ring-opening polymerization of 2-H-2-oxazoline and 2-methyl-2-oxazoline. Acid hydrolysis afforded the linear poly(ethylenimine) which was used in the following grafting reactions. Vapor pressure osmometry, gel permeation chromatography and viscosity measurements were used to characterize the polymers synthesized.Potassium 2-(cytos-1-yl)propanoate and potassium 3-(cytos-1-yl)butanoate were synthesized in good yield from the nucleic acid base. These cytosyl pendant groups were grafted onto the poly(ethylenimine) using 4-chloro-1-(4-chlorobenzenesulfonyl)benzotriazole, 93% graft, and norborn-5-ene-2,3-carboximido diphenyl phosphate, 70% graft. Grafting of the t-butoxycarbonyl and n-butoxycarbonyl protected cytosyl pendant groups resulted in a 47% and 40% graft, respectively.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1986.080241022
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