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The use of isoxazoline and isoxazole scaffolding in the design of novel thiourea and amide liquid-crystalline compounds.
Gonçalves, Itamar L; da Rosa, Rafaela R; Eifler-Lima, Vera L; Merlo, Aloir A.
Afiliación
  • Gonçalves IL; Laboratório de Síntese Orgânica Medicinal/LaSOM, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, Porto Alegre/RS, Brazil.
  • da Rosa RR; CENIMAT/i3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
  • Eifler-Lima VL; Laboratório de Síntese Orgânica Medicinal/LaSOM, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, Porto Alegre/RS, Brazil.
  • Merlo AA; Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
Beilstein J Org Chem ; 16: 175-184, 2020.
Article en En | MEDLINE | ID: mdl-32117474
A series of novel thiourea and amide liquid crystals containing 5-membered isoxazoline and isoxazole rings were synthetized and the liquid crystal properties studied. Thioureas were obtained using a condensation reaction of benzoyl chlorides, arylamines and ammonium thiocyanate. The amides, on the other hand, were the byproduct of a quantitative reaction which used potassium cyanate as the starting material. Thiourea and amide derivatives were predominantly SmA mesophase inductors. A nematic mesophase was observed only for thioureas and amides containing an isoxazole ring. Additionaly, the liquid crystal behavior was also dependent on the relative position of nitrogen and oxygen atoms on the 5-membered heterocycle.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Beilstein J Org Chem Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Beilstein J Org Chem Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania