ChemInform Abstract: An Efficient and Environmentally Friendly Procedure for the Synthesis of Some Novel 8‐Benzylidene‐4‐phenyl‐3, 4, 5, 6, 7, 8‐hexahydro‐1H‐quinazolin‐2‐ones/thione s Using Tetrabutylammonium Hexatungstate as a Reusable Heterogeneous Catalyst under Solvent‐Free Conditions. Issue 17 (28th April 2014)