Functional polymers, 11. Synthesis and polymerization of 2‐(2‐hydroxy‐5‐vinylphenyl)‐2H‐benzotriazole
作者:
Shohei Yoshida,
Otto Vogl,
期刊:
Die Makromolekulare Chemie
(WILEY Available online 1982)
卷期:
Volume 183,
issue 2
页码: 259-279
ISSN:0025-116X
年代: 1982
DOI:10.1002/macp.1982.021830201
出版商: Hüthig&Wepf Verlag
数据来源: WILEY
摘要:
Abstract2‐(2‐Hydroxy‐5‐vinylphenyl)‐2H‐benzotriazole (9) was prepared by a seven step synthesis in about a 25% overall yield starting fromo‐nitroaniline. Diazotization in aqueous HCl gave a diazonium salt which was coupled withp‐ethylphenol to an azo‐dye which was reduced with zinc powder in sodium hydroxide solution to 2‐(2‐hydroxy‐5‐ethylphenyl)‐2H‐benzotriazole (4). This compound was acetylated and then brominated withN‐bromosuccinimide to 2‐[2‐acetoxy‐5‐(1‐bromoethyl)phenyl]‐2H‐benzotriazole (6) which was dehydrobrominated with triethylamine in acetonitrile or tributylamine in dimethylacetamide to the vinyl compound which was hydrolyzed to9. This monomer was readily homopolymerized and copolymerized with styrene and methyl methacrylate using 2,
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