S. Florea, BENZOFUROBENZOTHIAZOLES .7. 2-(2'-THIENYL )-BENZOFURO[3,2-G]BENZOTHIAZOLE AND -BROMO-2-(2'-THIENYL)BENZOFURO[3,2-G]BENZOTHIAZOLE, Revue Roumaine de Chimie, 40(1), 1995, pp. 39-43
2-(2'-Thienyl)-(IVb) and 4-bromo-2-(2'-thienyl)-benzofuro[3,2-g] benzo
thiazole (VII) were prepared by the oxidation of 3-(2'-thlothenoyl)ami
no-(III)- and 2-bromo-3-(2'-thiothenoyl)amino-dibenzofuran (IV) with p
otassium ferricyanide in basic solution. The angular structure IVb is
demonstrated by IR, H-1-NMR and chemical method.