Base free synthesis of iron oxide supported on boron nitride for the construction of highly functionalized pyrans and spirooxindoles†
Boron nitride supported iron oxide (BN@Fe3O4) network was achieved via chemical reduction followed by aerial oxidation in absence of base. The prepared BN@Fe3O4 was characterized by powder XRD, FT-IR, Raman, BET and FE-SEM. The catalytic property was subsequently investigated for one-pot multicomponent domino reaction for the synthesis of highly functionalized pyrans and spirooxindoles derivatives on water. The present method is simple, high yielding, recyclable and requires no column chromatography.