Mechano heterocyclic chemistry (MCH) is a recent quickly growing technique in the synthesis of het‑ erocycles and draws the attention of heterocyclic chemists towards the uses of grindstone technique in a solvent free green efficient synthesis of many heterocyclic systems. | Multicomponent synthesis of 4-arylidene-2-phenyl-5 4H -oxazolones azlactones using a mechanochemical approach