6-S-Alkyl-6-thiohexonolactones and 6-S-Alkyl-6-thiohexitols: Efficient synthesis and new smectic liquid crystal phases

The mesophasic properties of S-alkylthiohexonolactones (d-galactono- and d-mannono-) and the corresponding itol derivatives with general formula Su-SR (R = C11H23) have been investigated. The observation that the synthesized compounds of this series has been studied using crossed polarized optical microscopy. This study involves the discovery of new chiral Smectic A liquid crystal phase through direct comparison with the defective texture of known Smectic A phase of available commercially biphenyls 8CB and 10CB.