75754-16-4Relevant academic research and scientific papers
New Heterocyclic Liquid Crystalline Compounds
Karamysheva, L.A.,Kovshev, E.I.,Pavluchenko, A.I.,Roitman, K.V.,Titov, V.V.,et al.
, p. 241 - 252 (2007/10/02)
Mesomorphic derivatives of 2-substituted 5-p-alkyl(alkoxy or cyano)phenylpyridines, 1,4-disubstituted piperidines, and ethyl 5-p-alkylphenylthiophene-2-carboxylates have been synthesised and their liquid crystal properties compared with those of analogous benzene and cyclohexane derivatives.Intermediates in the pyridine derivative synthesis 2-thienyl- and 2-furylpyridines - have been found to be mesomorphic too.Some piperidine compounds containing the cyano group in the benzene ring exhibit a large (over +30) positive dielectric anisotropy.
SYNTHESIS AND STRUCTURE OF MESOMORPHIC 2-CYANO-5--PYRIDINES
Pavlyuchenko, A. I.,Titov, V. V.,Smirnova, N. I.,Grachev, V. T.
, p. 681 - 684 (2007/10/02)
Liquid-crystal 2-cyano-5-pyridines were synthesized by the reaction of 1-dimethylamino-3-dimethylimmonia-2-propene perchlorates with 2-acetylfuran and subsequently through 2-furyl-5-pyrylium perchlorates and 2-(2-furyl)-5-pyridines by conversion of the latter to 5-alkyl(alkoxy)phenylpyridine-2-carboxylic acids, from which the cyano derivatives were obtained by the usual scheme through the amides.The intermediate arylfurylpyridines and arylpyridine-2-carboxylic acid imides also display liquid-crystal properties.
