2- ethyl vinyl ether with photosensitizer

This article reports on the synthesis of photosensitive polymers with pendant cinnamic ester moieties and suitable photosensitizer groups by cationic copolymerizations of 2-(cinnamoyloxy)ethyl vinyl ether (CEVE) (12) with other vinyl ethers containing photosensitizer groups, and by cationic polymerization of 2-chloroethyl vinyl ether (CVE) followed by substitution reactions of the resulting poly (2-chloroethyl vinyl ether) (PCVE) with salts of photosensitizer compounds and potassium cinnamate using a phase transfer catalyst in an aprotic polar solvent. The photochemical reactivity of the obtained polymers was also investigated. 

The reactions of PCVE with PNP are quantitative under these reaction conditions, and polymeric photosensitizers such as poly[2-chloro-ethyl vinyl ether-co-2-(4-nitrophenoxy)ethyl vinyl ether] (PCVE-NPVE) containing about 4, 10, 19, 28, 37, and 46 mol-% of pendant 4-nitrophenoxy (NP) groups were prepared (Table II). Although the reactions of PCVE with PNN were carried Table II. Reaction Condition and Results of the Syntheses... 

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