ChemInform Abstract: Transition Metal‐Free One‐Pot Cascade Synthesis of 7‐Oxa‐2‐azatricyclo [7.4.0.02, 6]trideca‐1(9), 10, 12‐trien‐3‐ones from Biomass‐Derived Levulinic Acid under Mild Conditions. Issue 12 (25th March 2014)