Bf. Bonini et al., CHIRAL MESOGENS CONTAINING THE 2,3-DIHYDROBENZOPYRAN NUCLEUS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 290, 1996, pp. 49-65
Some chiral derivatives containing the 2,3-dihydrobenzopyran unit were
synthesised and their thermotropic behaviour was investigated. Notice
ably, p-cyanobenzoates of 2-alkyl-2,3-dihydrobenzopyrans showed S-A me
sophases with good stability near to room temperature.