ChemInform Abstract: (E)‐3‐Halo‐2‐styryl‐4H‐chromen‐4‐ones: Synthesis and Transformation to Novel Pyrazoles. Issue 9 (4th March 2014) - Ferreira, Joana P. A.; Silva, Vera L. M.; Elguero, Jose; Silva, Artur M. S.