Synthesis of chromeno[3,4-B]quinoline derivatives by heterogeneous [Cu(II)BHPPDAH] catalyst without being immobilized on any support under mild conditions using PEG 300 as green solvent.

Synthesis of chromeno[3,4-B]quinoline derivatives by heterogeneous [Cu(II)BHPPDAH] catalyst without being immobilized on any support under mild conditions using PEG 300 as green solvent.