Phenyl and Pyridyl Bis-Pyrazoles: Synthesis from the Bis(β-diketone) Precursors and Characterization by Analytical and Spectroscopic Methods
作者:Josefina Pons、Arafa Chadghan、Jordi Garcia-Anton、Josep Ros
DOI:10.2174/157017810790796273
日期:2010.3.1
The bis(β-diketone) compounds, 3,3-(pyridine-2,6-diyl)bis(1-phenylpropane-1,3-dione) monohydrated (1a H2O) and 3,3-(pyridine-2,6-diyl)bis(1-(pyridin-2-yl)propane-1,3-dione) monohydrated (1b H2O) were prepared by Claisen condensation of the appropriate ketone and dimethyl pyridine-2,6-dicarboxylate ester. Compounds 2,6-bis(5- phenyl-1H-pyrazol-3-yl)pyridine dihydrated (2a 2H2O) and 2,6-bis(5-(pyridin-2-yl)-1H-pyrazol-3-yl)pyridine monohydrated (2b H2O) were synthesized by reaction of the appropriate bis(β-diketone) compounds and hydrazine monohydrate.
双(β-二酮)化合物,3,3-(吡啶-2,6-二基)双(1-苯基丙烷-1,3-二酮)一水合物(1a H2O)和3,3-(吡啶-2,6 -二基)双(1-(吡啶-2-基)丙烷-1,3-二酮)一水合物(1b H2O)通过适当的酮和吡啶-2,6-二甲酸二甲酯的克莱森缩合制备。化合物 2,6-双(5-苯基-1H-吡唑-3-基)吡啶二水合物 (2a 2H2O) 和 2,6-双(5-(吡啶-2-基)-1H-吡唑-3-基)通过适当的双(β-二酮)化合物和一水合肼反应合成一水吡啶(2b H2O)。