Barium aluminate nano-powders efficient catalyst for the synthesis of novel benzo[b]thiophene, thieno[2,3-c]thiopyran and thieno[2,3-c]pyridine derivatives

GRAPHICAL ABSTRACT ABSTRACT Uniform nanopowders of barium aluminate (BaAl2O4) can be synthesized by a facile solution reaction at room temperature using barium and aluminum salts and 2-aminoethanol as a precipitating agent. The as-prepared sample showed a good reactivity in the synthesis of benzo[b]thiophene, thieno[2,3-c]thiopyran and thieno[2,3-c]pyridine derivatives. Comparatively the method is efficient and eco-friendly, and finally, a range of compounds with variable functionalities in excellent yield can be achieved.