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REVISTA DE CHIMIE
Cite as: Rev. Chim.
https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
ISSN Online 2668-8212
ISSN Print: 1582-9049
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Revista de Chimie (Rev. Chim.), Year 2015, Volume 66, Issue 1,





Gabriela RAu, DENISA CONSTANTINA AMZOIU, ANCA MIHAELA STOIAN (BULEARCA), CAMELIA ELENA STANCIULESCU, CATALINA GABRIELA PISOSCHI
Researches Concerning the Synthesis, Physico-Chemical and
Liquid Crystal Properties of New Azomonoetheramides

Abstract:

The synthesis of some novel azomonoetheramides, five 4-(N-phenylacetamidoxy) azobenzenes and three 4-(N-phenylacetamidoxy)-4’-(phenylazo) biphenyls, was completed through condensation of some 4­(phenylazo) phenols or 4-hydroxy-4’-(phenylazo) biphenyls, 4-hydroxy-4’- (p-chloro-phenylazo) biphenyl, 4-hydroxy-4’-(p-methyl-phenylazo) biphenyl, in alkaline medium, with 4-ethoxy-N-chloroacetylaniline. The purification of compounds was achieved by recrystallization from toluene. The purity degree was checked by gas chromatography. The compounds were solid, with different colours, and with high melting points. Their structures were established both by elemental and spectral analysis (UV-Vis, FTIR, 1H-NMR, GC-MS). The liquid crystal properties were studied by polarizing optical microscopy (POM) and differential scanning calorimetry (DSC). Keywords: azomonoetheramides, synthesis, physico-chemical characterization, liquid crystal properties

Issue: 2015, Volume 66, Issue 1
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