52899-65-7Relevant academic research and scientific papers
Synthesis and Properties of Liquid Crystalline Side Chain Polysiloxanes of Negative Dielectric Anisotropy
Surendranath, V.,Johnson, D. L.
, p. 207 - 212 (2007/10/02)
A series of alkenyl substituted biphenyl benzoates having a lateral cyano susbtituent have been prepared.These liquid crystalline monomers were hydrosilylated with polymethylhydrosiloxane.The monomers have wide nematic range, and the polymers show wide range liquid crystallinity.Keywords: liquid crystals, polysiloxanes, synthesis
Ortho Cyano Substituted Negative Dielectric Anisotropic Liquid Crystals
Hong, X. J.,Ge, M. J.,Zhao, X. M.,Fen, Z. R.,Liu, Z. J.
, p. 81 - 88 (2007/10/02)
A homologous series of 2'-cyano-4'-n-alkylbiphenylcarboxylates and 4-n-alkylcyclohexyl-p-benzoates were synthesized by treating 2'-cyano-4'-n-alkyl substituted phenols with 4-n-alkyl substituted biphenyl carboxylic acids and cyclohexyl benzoic acids.The method of synthesis was discussed.All these compounds were nematogenic in character and their phase transition temperatures were examined.A wide range of mesomorphism was observed in almost all the homologous series.IR, NMR, and dielectric property of these compounds were studied studied.The negative dielectric anisotropic property of these liquid crystalline compounds makes them suitable for application in positive GH display devices.
LATERALLY SUBSTITUTED 4-n-ALKYLPHENYL 4-n-ALKYLBICYCLO(2. 2. 2)OCTANE-1-CARBOXYLATES.
Gray,Kelly
, p. 109 - 119 (2007/10/02)
Different substituents (fluoro, chloro, bromo, and cyano) have been separately introduced into the 2-position of the phenolic moiety of the 4-n-alkylphenyl 4-n-alkylbicyclo(2. 2. 2)octane-1-carboxylates to produce new series of low melting esters with lar
CONVENIENT METHOD OF OBTAINING 2-CYANO-4-ALKYLPHENOLS, 4-CYANOPHENOL AND 4-CYANOANILINE.
Adamska,Dabrowski,Dziabuszek
, p. 93 - 99 (2007/10/02)
A convenient method is described of obtaining 2-cyano-4-alkylphenols and 4-cyanophenol by substituting brombine atom for the cyano group in the respective bromoanisoles and demethylation of the cyanoalkylanisoles. It is suggested to prepare 4-cyanoaniline by reduction of 4-cyano-nitrobenzene with aqueous hydrazine solutions.
