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BIBTEX RIS

Síntese e caracterização de copolímeros de cadeia lateral derivados de acrilatos de 4,5-di-hidroisoxazol e do (-)-mentol

2012; Brazilian Chemical Society; Volume: 35; Issue: 8 Linguagem: Inglês

10.1590/s0100-40422012000800007

ISSN

1678-7064

Autores

Joel A. Passo, Aloir A. Merlo, Juliana Eccher, Ivan H. Bechtold, Stephen M. Kelly,

Tópico(s)

Synthesis of Organic Compounds

Resumo

SYNTHESIS AND CHARACTERIZATION OF COPOLYMERS 4,5-DIHYDROISOXAZOLE AND (-)-MENTHYL ACRYLATES.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.

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