L. Dinescu et al., A CONVENIENT SYNTHESIS OF 6,6'-DIALKOXYTHIOINDIGO DYES SUITABLE FOR DOPING INTO A LIQUID-CRYSTAL HOST, Tetrahedron letters, 35(41), 1994, pp. 7549-7552
A convenient synthesis of symmetrical 6,6'-di-n-alkoxythioindigo dyes
suitable for doping into a liquid crystal host is reported, along with
measurements of solubility limits for the dyes in nematic and smectic
liquid crystals;with broad temperature range.