Abstract A series of convenient synthetic procedures are reported for pyrazole derivatives with carbonyl or ester groups in the 3-and 5-positions and variable substitution pattern at C4 and at the functional side arms. All compounds have been characterized by 1 H and 13 C NMR spectroscopy, elemental analyses, and mass spectrometry. In addition, the structures of several pyrazole derivatives have been determined by single crystal X-ray diffraction, ...
