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The title electroluminescent macromonomers were synthesized starting from hydroquinone in four following steps: O-ethylation, C-chloromethylation, reaction with triphenylphosphine and Wittig’s condensation of the resulting salt with 2-thienylcarbaldehyde. The product was separated into three stereoisomers. Structures of the stereoisomers were studied by spectroscopy and rentgenography as well as by electrochemical methods.

Synthesis and some properties of three stereoisomers of 1,4-diethoxy-2,5-bis[2-(thien-2-yl)ethenyl]benzene