One-pot conversion of 2-ethoxycarbonyl-4H-3,1-benzoxazine-4-ones to tetracyclic quinazoline-6,12-diones in the presence of a Pd complex nanocatalyst

Abstract Heterocyclic transformation of 2-ethoxycarbonyl-4 H -3,1-benzoxazine-4-ones to new derivatives of tetracyclic quinazoline-4-ones has been investigated with MCM-41‐dtz‐Pd as a heterogeneous recoverable nanocatalyst under mild reaction conditions.