Synthesis of pyrazole-4-carbonitrile derivatives in aqueous media with CuO/ZrO2 as recyclable catalyst
作者:Suresh Maddila、Surjyakanta Rana、Ramakanth Pagadala、Shravankumar Kankala、Suryanarayana Maddila、Sreekanth B. Jonnalagadda
DOI:10.1016/j.catcom.2014.12.005
日期:2015.2
the synthesis of pyrazole-4-carbonitrile derivatives in aqueous media in excellent yields (88–92%) is described. The catalyst was characterized by X-ray diffraction (XRD) patterns, Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and BET surface area analysis. The main benefits of one-pot three component protocol are short reaction times (< 2 h), simple workupprocedure, safety
Graphene oxide–TiO<sub>2</sub> composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines
作者:Shweta Kumari、Amiya Shekhar、Devendra D. Pathak
DOI:10.1039/c5nj03380b
日期:——
GO–TiO2 has been found to be a highly efficient and recyclable heterogeneous catalyst for the synthesis of pyrazoles and pyridines in aqueous medium at room temperature.