SYNTHESIS AND REACTIONS OF 3-AMINOTHIAZOLIDINE-2-THION-4-ONE DERIVATIVES. 5. POLYMETHINE DYES OF THE THIAZOLOTRIAZOLE SERIES

Article abstract of DOI:10.1007/BF00503553

It is shown that the reaction of thiazolo<3,4-b><1,2,4>triazole-5-thiones with alkylating agents gives 5-methylthiothiazolotriazolium salts, which react with the appropriate intermediates to give polymethine dyes.