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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.
