Zhou Guang
2008
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Journal
Chinese Journal of Applied Chemistry
Abstract
Ethyl 5-phenyl-1H-pyrazole-3-carboxylate was synthesized by one-pot reaction method, and was used further for the synthesis of nine 5-phenyl-1H-3-pyrazole hydrazones, which were characterized by elemental analysis, IR and 1H NMR. Furthermore, a trinuclear copper complex was obtained in the monoclinic space group of C2/c with cell dimensions of a=2.576 7(3) nm, b=1.194 42(15) nm, c=14.126 5(17) nm, β=98.993(2)°, V=4.294 1(9) nm3, Z=4, Dc=1.629 g/cm3 and R1=0.035 5 by the reaction of Cu(AcO)2 and 5-phenyl-1H-pyrazole-3-carboxylic acid which was obtained by hydrolysis of ethyl 5-phenyl-1H-pyrazole-3-carboxylate, and as a result the molecular structure of pyrazole was confirmed.