DOI: 10.1039/d6ra05631h ISSN: 2046-2069
Water-mediated green synthesis of coumarin derivatives using a recyclable heteropoly acid–niobium(
v
) oxide hybrid catalyst
Joydeep Mahapatra, Soumya Deep Maity, Dineshkumar Bharathidasan, Chandan Maity, Sib Sankar Mal Green synthesis of aryl and cinnamyl pyrano-chromene derivatives through a water-mediated protocol employing a recyclable STA@Nb 2 O 5 catalyst under mild conditions.