Aqua mediated SnO2 nanoparticles: A recyclable and benign catalyst for the synthesis of Quinoxalines

An efficient and mild synthesis of quinoxalines including cyclo-condensation of 1, 2-phenylenediamine and 1, 2-diketonesin the presence of1mol% catalytic amount of SnO2 nanoparticles (1 mol%) in water at room temperature is established. On the whole, this study introduced at this point is substantial in terms of using water as solvent, low reaction time(5 to 10 minutes), high yields of products (85-88%), reusability of catalyst(three cycles), eco-friendliness, effortlessness of performance and it displays along the line of green chemistry.