Synthesis of linear bis-thiazolo[2,3-d][8,9-d]trans-quinacridone

The paper presents the synthesis of a new heterocycles compact condensed system bis- thiazolo[2,3 -d] [8,9-d] trans-quinacridone, unquoted in speciality literature. This system was obtained for the first time by an original method, by the condensation of aminobenzothiazoles with succinyl succinic ester. The spectral analysis confirmed the structure proposed and tinctorial tests were also effected. (C) 2004 Elsevier Ltd. All rights reserved.