77782-80-0Relevant academic research and scientific papers
Facile synthesis of a series of liquid crystalline 2-(4'-alkylphenyl)-5-cyanopyridines
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Page/Page column 2, (2008/12/06)
The invention relates to a facile synthesis of a series of 2-(4′-alkylphenyl)-5-cyanopyridine liquid crystal compounds which are represented by the following formula (I): wherein Cn is a linear alkyl having 1-12 carbon atoms. The synthesis of the liquid crystalline 2-(4′-alkylphenyl)-5-cyanopyridine is completed in a two-step reaction. First, a Grignard reagent (such as 4-alkylphenylmagnesium bromide) is added to a 3-cyanopyridinium salt (such as N-phenyloxycarbonyl-3-cyanopyridinium chloride) to get a 1,2-dihydropyridine. Then the 1,2-dihydropyridine is oxidized with o-chloronil to obtain the 2-(4′-alkylphenyl)-5-cyanopyridine.
SYNTHESIS OF 2-(4-ALKYLPHENYL)- AND 2-(4-ALKOXYPHENYL)-5-CYANOPYRIDINES AND THEIR LIQUID-CRYSTAL CHARACTERISTICS
Pavlyuchenko, A. I.,Smirnova, N. I.,Mikhailova, T. A.,Kovshev, E. I.,Titov, V. V.
, p. 953 - 956 (2007/10/02)
6-(4-Alkylphenyl)- and 6-(4-alkoxyphenyl)-3-cyano-2-pyridones were obtained by the cyclization of 4-(4-alkylphenyl)- and 4-(4-alkoxyphenyl) oxidovinyl ketone salts with cyanoacetamide; the products were converted into 6-(4-alkylphenyl)- and 6-(4-alkoxyphe
