Eleven compounds of general structure R-X-Y-COO-Z-R', where X,Y and Z are either phenyl or trans cyclohexyl rings, were synthesized and their liquid crystalline properties were evaluated.The isomerization methods for cis-4-alkyl cyclohexanol to the trans isomer and for 4'-alkylphenyl-4-cis-cyclohexanecarboxylic acid to its trans isomer are discussed.The trans isomers were isolated and purified by preparative HPLC.The structure assignments were confirmed by carbon 13 NMR.
Liang, J. C.,Hubbard, R.
p. 89 - 98
(2007/10/02)
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