Abstract: The new compounds 2-[4-(6-cyanobenzothiazol-2-yl) phenyl]-5-(6-cyano- benzothiazol-2-yl) furan (6a) and 2-[4-(6-Cyanobenzothiazol-2-yl) phenyl]-5-(6-cyano- benzothiazol-2-yl) thiophene (6b) were synthesized by multi-step reactions from the corresponding 2-furan and 2-thiophene carboxaldehydes (route A), as well as from 2-furan and 2-thiophene carboxylic acids (route B). Route B involves one less step than route A, ...