Novel biphenyl-substituted 1,2,4-oxadiazole ferroelectric liquid crystals: synthesis and characterization

• Mahabaleshwara Subrao,
• Dakshina Murthy Potukuchi,
• Girish Sharada Ramachandra,
• Poornima Bhagavath,
• Sangeetha G. Bhat and
• Srinivasulu Maddasani

Beilstein J. Org. Chem. 2015, 11, 233–241, doi:10.3762/bjoc.11.26

• ) polarization switching. The mesomorphic thermal stabilities of these compounds are discussed in the domain of the symmetry and the flexibility of the alkyloxy end chain length attached to the chiral center. Keywords: 3,5-disubstituted-1,2,4-oxadiazoles; ferroelectric switching; mesomorphism; optical textures

• to their electroluminescent, non-linear optical, electron transport and liquid crystalline (LC) properties. Torgova et. al., have reported [16][17][18][19] 3,5-disubstituted-1,2,4-oxadiazoles with LC phase behavior for the first time in the literature. Subsequently, the derivatives of 1,2,4

• synthetic route for the preparation of 3,5-disubstituted-1,2,4-oxadiazoles presently adopted is presented in Scheme 1. 4-Cyanobenzoic acid is converted into its ester by treating with two different moieties, i.e., benzyl bromide and 1-dodecanol under different reaction conditions. Treatment of benzyl 4