106290-87-3Relevant articles and documents
THIAKETOCYANINE DYES WITH AN ortho-PHENYLENE BRIDGE IN THE CHROMOPHORE
Sosnovskii, G. M.,Lugovskii, A. P.
, p. 1757 - 1759 (2007/10/02)
Meso-acetoxy-substituted tricarbocyanine dyes were obtained by the condensation of 1,3-bis(dimethylaminomethylene)-2-indanone with the quaternary salts of 2-methylbenzothiazole derivatives in acetic anhydride.Hydrolysis of the dyes under the conditions of acid catalysis led to the corresponding thiaketocyanine dyes with a symmetrical ortho-phenylene bridge in the chromophore.