Inexpensive ionic liquid mediated green synthetic approach of multi-functionalized regioselective β-lactam fused isoxazolidine heterocyclic hybrids

Quaternary ammonium salt based room temperature ionic liquid, ACI/EG utilized for the synthesis of isoxazolidine heterocyclic hybrids by the addition of beta lactam fused nitrone with number of mono/bis O-allylic dipolarophiles. Exclusive regioselectivity with excellent chemical yield was achieved.197