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1 article(s) from Gonçalves, Itamar L

The use of isoxazoline and isoxazole scaffolding in the design of novel thiourea and amide liquid-crystalline compounds

Itamar L. Gonçalves,
Rafaela R. da Rosa,
Vera L. Eifler-Lima and
Aloir A. Merlo

Beilstein J. Org. Chem. 2020, 16, 175–184, doi:10.3762/bjoc.16.20

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Scheme 1: Amines 3, 4, 8, 9, 12 and 13 installed on 5-membered isoxazoline and isoxazole rings.

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Scheme 2: Synthesis of acylisoxazolinylthioureas 17a–c and acylisoxazolylthioureas 18a–c. (i) SOCl₂, reflux, ...

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Scheme 3: Synthesis of amides. Part A: (i) SOCl₂, reflux; (ii) KOCN, acetone, reflux; (iii) amines 3, 4, 8 an...

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Figure 1: Optical textures observed on POM for thioureas 17a (a), 17b (b), 18a (c), 18b (d) and 18c (e,f). Al...

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Figure 2: Optical textures observed on POM of amide 19. (a) Fan-shaped focal conic texture of the SmA mesopha...

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Figure 3: DSC curves for the thiourea 17a (A), amide 19 (B) and 20 (C) upon the first heating and cooling cur...

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Figure 4: TGA analysis for thiourea 18c; and amides 20 and 22.

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Published 06 Feb 2020

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