Synthesis, Characterization, Crystal and Molecular Structure Analysis of 1-(2-Chlorophenyl)-3-methyl-4-(p-tolylthio)-1H-pyrazol-5-ol

Abstract

The synthesis of a novel tolylthiopyrazol bearing methyl group has been achieved by transition metal free N-chlorosuccinimide mediated direct sulfenylation of 1-aryl pyrazolones at room temperature. The product obtained was characterized by spectroscopic techniques and finally confirmed by X-ray diffraction studies. The compound 1-(2-chlorophenyl)-3-methyl-4-(p-tolylthio)-1H-pyrazol-5-ol (m.f. C17H15N2OSCl) crystallizes in monoclinic crystal class in space group P21/c with cell parameters a = 9.6479(5) Å, b = 15.1233(8) Å, c = 11.4852(6) Å, β = 108.374(2)°, V=1590.4(2) Å3 and Z = 4. The final residual factor R1 = 0.0499.