专用于100的庆典日南开大学周年 抽象的 报道了以K 2 CO 3为碱的巴豆酸衍生的硫酰化物与亚苄基吡唑并酮的[4 + 3]环化反应。原料的容易获得和简单的环化程序使该方法适用于以良好或优异的收率制备各种4,7-二氢-1 H-氧代庚并[2,3- c ]吡唑。 报道了以K 2 CO 3为碱的巴豆酸衍生的硫酰化物与亚苄基吡唑并酮的[4 + 3]环化反应。原料的容易获得和简单的环化程序使该方法适用于以良好或优异的收率制备各种4,7-二氢-1 H-氧代庚并[2,3- c ]吡唑。
Organophosphane-Catalyzed Direct β-Acylation of 4-Arylidene Pyrazolones and 5-Arylidene Thiazolones with Acyl Chlorides
作者:Pankaj V. Khairnar、Yin-Hsiang Su、Yung-Chang Chen、Athukuri Edukondalu、Yi-Ru Chen、Wenwei Lin
DOI:10.1021/acs.orglett.0c02408
日期:2020.9.4
An efficient method for the direct β-acylation of arylidene pyrazolones and thiazolones with acyl chlorides in the presence of a base catalyzed by organophosphanes is reported. A variety of functionalized 4-arylidene pyrazolone and 5-arylidene thiazolonederivatives were prepared under metal-free and mild conditions via a tandem phospha-Michael addition/O-acylation/intramolecular cyclization/rearrangement
Efficient Synthesis of 4,7-Dihydro-1H-oxepino[2,3-c]pyrazoles by Potassium Carbonate Promoted [4+3] Annulation of Crotonate-Derived Sulfur Ylides with Benzylidenepyrazolones
作者:Dian Wang、Xue Wang、Xuange Zhang、Zhiwei Miao
DOI:10.1055/s-0037-1610693
日期:2019.5
crotonate-derived sulfurylides with benzylidenepyrazolones using K2CO3 as the base is reported. The ready availability of starting materials and the simple cyclization procedure make this approach suitable for the preparation of a diverse array of 4,7-dihydro-1H-oxepino[2,3-c]pyrazoles in good to excellent yields. The [4+3] annulation reaction of crotonate-derived sulfurylides with benzylidenepyrazolones
专用于100的庆典日南开大学周年 抽象的 报道了以K 2 CO 3为碱的巴豆酸衍生的硫酰化物与亚苄基吡唑并酮的[4 + 3]环化反应。原料的容易获得和简单的环化程序使该方法适用于以良好或优异的收率制备各种4,7-二氢-1 H-氧代庚并[2,3- c ]吡唑。 报道了以K 2 CO 3为碱的巴豆酸衍生的硫酰化物与亚苄基吡唑并酮的[4 + 3]环化反应。原料的容易获得和简单的环化程序使该方法适用于以良好或优异的收率制备各种4,7-二氢-1 H-氧代庚并[2,3- c ]吡唑。
Synthesis, crystal structure, Hirshfeld surface analysis, biological evaluation, DFT calculations, and in silico ADME analysis of 4-arylidene pyrazolone derivatives as promising antibacterial agents
acid. The prepared compounds were characterized by physical and spectroscopic techniques and for compound 3i by single crystal X-ray diffraction analysis. Theoretical calculations such as molecularstructure optimization, frontier molecular orbitals, molecular electrostatic potential, and molecular descriptors have been performed in order to get insight into the molecularstructure and chemical reactivity
摘要 本文描述了一系列由氨基磺酸催化的 4-亚芳基-1H-吡唑-5(4H)-酮衍生物 (3a-i) 的超声辅助合成。制备的化合物通过物理和光谱技术进行表征,化合物 3i 通过单晶 X 射线衍射分析进行表征。已经进行了分子结构优化、前沿分子轨道、分子静电势和分子描述符等理论计算,以深入了解合成化合物的分子结构和化学反应性。评估了所有化合物对六种细菌菌株的抗菌活性,发现这些化合物是革兰氏阳性菌的良好抑制剂,而不是革兰氏阴性菌。此外,