Synthesis and characterization of copolymers 4,5-dihydroisoxazole and (-)-menthyl acrylates

Química Nova

Kelly, Stephen M.¹  Merlo, Aloir A.¹  Universidade Federal de Santa Catarina, Florianópolis, Brasil¹  Eccher, Juliana¹  Passo, Joel A.¹  Bechtold, Ivan H.¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil¹ 

关键词: 3;    5-disubstituted isoxazolines;    copolymers;    menthyl acrylate.;   

DOI  :  10.1590/S0100-40422012000800007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Five monomers 5-[4-(5-cyano-4,5-dihydroisoxazol-3-yl)phenoxy]undecyl acrylate (7a); n-alkyl 3-{4-[5-(acryloyloxyundecyl)oxyphenyl]}-4,5-dihydroisoxazole-5-carboxylate (7b,c for n-butyl and n-hexyl, respectively); 3-{4-[5-(acryloyloxyundecyl) oxyphenyl]}-4,5-dihydroisoxazole-5-carboxylic acid (7d) and (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl acrylate (9) and the corresponding copolymers 10a-d,11 and homopolymers 12 from 7a and 13 from 9 were designed and synthesized. Except for acrylate 9 which is derived from (-)-menthol, all of the monomers belong to the series containing the isoxazoline ring linked to the acrylate unit by a flexible spacer chain of eleven methylene units. They presented low glass temperature and despite birefringence behavior, these copolymers showed no mesomorphic properties.

【 授权许可】

Unknown