The synthesis of enantiomerically pure bridged biphenyl compounds, (−)-( R )-3,9-bis(4-(dodecyloxy)benzoyloxy)-5,7-dihydro-1,11-dimethyldibenzo[ c, e ]thiepine, 13, and (−)-( R )-3,9-bis(4-(dodecyloxy)benzoyloxy)-5,7-dihydro-1,11-dimethyldibenzo[ c, e ]-thiepin dioxide, 14, is described. This is the first report of smectic C* mesophases with a rigid twisted biphenyl core and axial chirality.
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Solladié et al. (1998) studied this question.
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