Amidrazones and 2-Acetylcyclopentanone in the Synthesis of Cyclopenta[<i>e</i>][1,3,4]Oxadiazepines
作者:Ashraf A. Aly、Esam A. Ishak、Mohamed Ramadan、N. A. A. Elkanzi、Ahmed A. M. El-Reedy
DOI:10.1002/jhet.2727
日期:2017.3
2‐acetylcyclopentanone at room temperature to give cyclopenta[e]‐[1,3,4]oxadiazepines. The structure of the obtained products was proved by IR, mass, and NMR spectra and elemental analyses. Two‐dimensional NMR spectroscopy was used to differentiatebetween other possible isomers. The reaction mechanism is also discussed.
咪唑酮在室温下与2-乙酰基环戊酮反应生成环戊[ e ]-[1,3,4]恶二氮杂s。所得产物的结构通过IR,质谱和NMR谱以及元素分析证明。二维NMR光谱用于区分其他可能的异构体。还讨论了反应机理。
Synthesis, characterization, and antimicrobial activity of some new
<i>N</i>
‐aryl‐
<i>N</i>
’‐(2‐oxoindolin‐3‐ylidene)‐benzohydrazonamides
作者:Mohsen A.‐M. Gomaa、Doaa K. Hassan
DOI:10.1002/ardp.201900209
日期:2019.12
A green approach was developed for synthesizing a series of (isatin‐3‐ylidene)‐hydrazonamides 3a–j from the reaction between isatin, (isatin‐3‐ylidene)malononitrile, or 2‐cyano‐2‐(2‐isatin‐3‐ylidene)acetate and benzohydrazonamide in ethyl acetate solutions at ambient temperature. The structures of the new compounds were confirmed on the basis of spectral data. In this eco‐friendly medium, a variety
开发了一种绿色方法,用于从靛红、(靛红-3-亚基)丙二腈或 2-氰基-2-(2-靛蓝-3)之间的反应合成一系列(靛红-3-亚基)-腙酰胺 3a-j -亚基)乙酸酯和苯甲腙酰胺在环境温度下的乙酸乙酯溶液中。根据光谱数据确认了新化合物的结构。在这种环境友好的介质中,在没有催化剂的情况下获得了多种(靛红-3-亚基)腙酰胺,收率良好至极好。评价所有合成产物的抗菌活性。在测试的化合物中,3b 和 3d 对金黄色葡萄球菌表现出良好的抗菌活性,而其他化合物对标准药物环丙沙星的反应中等。
Reactions of<i>N</i><sup>3</sup>-Substituted Amidrazones with<i>cis</i>-1,2-Cyclohexanedicarboxylic Anhydride and Biological Activities of the Products
series of novel compounds were synthesized in reactions of N3‐substituted amidrazones with cis‐1,2‐cyclohexanedicarboxylic anhydride: linear, isoindole, and triazole derivatives. All new structures were confirmed by H1 NMR and IR spectrometry as well as elemental analysis. Potential biological effects of new compounds were predicted with the Prediction of Activity Spectra for Substances (PASS) program. Antiviral
Reaction of Amidrazones with 2,3-Diphenylcyclopropenone: Synthesis of 3-(aryl)-2,5,6-Triphenylpyrimidin-4(3H)-ones
作者:Ashraf A. Aly、Mohamed Ramadan、Mohamed Abd Al-Aziz、Hazem M. Fathy、Stefan Bräse、Alan B. Brown、Martin Nieger
DOI:10.3184/174751916x14743924874916
日期:2016.10
Amidrazones react with 2,3-diphenylcyclopropenone to give 3-aryl-2,5,6-triphenylpyrimidin-4(3H)-one derivatives in good yields. The synthesised compounds were characterised by spectroscopic tools and their structures confirmed by X-ray crystallography. A rational mechanism of formation of the products is presented.
脒腙与 2,3-二苯基环丙烯酮反应,以良好的收率得到 3-芳基-2,5,6-三苯基嘧啶-4(3H)-one 衍生物。合成的化合物通过光谱工具进行表征,并通过 X 射线晶体学确认其结构。提出了产物形成的合理机制。
Catalyst-free direct synthesis of β-enaminones through reaction of benzohydrazonamides with cyclic 1,3-diketones: Access to exocyclic β-enaminones
作者:Mohsen A.-M. Gomaa、Georg Manolikakes、Yu Sun、Doaa K. Hassan
DOI:10.1080/00397911.2019.1658785
日期:2019.11.17
Abstract The reaction of benzohydrazonamides with cyclic 1,3-diketones affords β-enaminones in good to excellent yields (14 examples, 69 − 89%). This transformation proceeds under mild reaction conditions (ethyl acetate, 25 °C, 12 − 24 h) in the absence of any catalyst and gives access to novel nitrogen-rich organic scaffolds. Graphical Abstract