3,6-Bis(2-arylethenyl)-1,2,4,5-tetrazines - Synthesis, LC Properties and Photochemistry

Article abstract of DOI:10.1002/prac.199533701137

The (E,E)-3,6-bis(2-arylethenyl)-1,2,4,5-tetrazines 8 were prepared in a synthetic sequencve starting with aromatic aldehydes 1 and cinnamic acids 2, respectively (Scheme 1).The rod-like conjugated molecules represent clamitic mesogens as well as extended chromophores.Hence, we investigated the formation of liquid crystals, achieved by the introduction of long flexlible side chains, and the photochemical behaviour that is characterized by the fragmentation of the central ring (Scheme 3).