An efficient and confluent approach for the synthesis of novel 3,4-dihydro-2H-naphtho[2,3-e][1,3]oxazine-5,10-dione derivatives by a three component reaction in ionic liquid

Novel 3,4-dihydro-2 H -naphtho[2,3- e ][1,3]oxazine-5,10-diones have been synthesized via one pot condensation of 2-hydroxy-1,4-naphthoquinone, aromatic amine and formaldehyde in [bmim]BF 4 .