SOCl<sub>2</sub> catalyzed cyclization of chalcones: Synthesis and spectral studies of some bio-potent <sup>1</sup><i>H</i> pyrazoles
作者:K. Ranganathan、R. Suresh、G. Vanangamudi、K. Thirumurthy、P. Mayavel、G. Thirunarayanan
DOI:10.4314/bcse.v28i2.11
日期:——
Some aryl-aryl 1H pyrazoles have been synthesised by cyclization of aryl chalcones and hydrazine hydrate in the presence of SOCl2. The yields of the pyrazoles are more than 85%. These pyrazoles are characterized by their physical constants and spectral data. The infrared, NMR spectral group frequencies of these pyrazolines have been correlated with Hammett substituent constants, F and R parameters. From the results of statistical analyses the effects of substituent on the spectral frequencies have been studied. The antimicrobial activities of all synthesised pyrazolines have been studied using Bauer-Kirby method.
一些芳基-芳基1H吡唑通过在SOCl2存在下对芳香醛和水合肼进行环化合成。吡唑的得率超过85%。这些吡唑通过其物理常数和谱学数据进行了表征。这些吡唑频率的红外和核磁共振(NMR)光谱组频率与Hammett取代基常数、F和R参数相关联。通过统计分析结果,研究了取代基对光谱频率的影响。所有合成的吡唑的抗微生物活性通过Bauer-Kirby方法进行了研究。