. 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.