Synthesis and Biological Activity of Substituted Spiro[chromene-4,3′-indoles] and Spiro[indole-3,4′-quinolines]
作者:S. A. Pogosyan、M. V. Pogosyan、L. R. Aleksanyan、A. S. Safaryan、A. G. Arakelyan
DOI:10.1134/s1070428018120254
日期:2018.12
New substituted spiro[chromene-4,3′-indoles] and spiro[indole-3,4′-quinolines] have been synthesized in 35–65% yields by one-pot regioselective three-component condensation of N-substituted isatins with two active methylene compounds.
The reaction of cyclic enaminones with arylidenemalononitriles was carried out in the presence of 13X molecular sieves in dimethyl sulfoxide. Under these mild reaction conditions, various bioactive N-aryl-4-arylhexahydroquinoline derivatives were obtained in high yields without the necessity of using transition-metal catalyst, organobase, or reflux conditions.
Efficient One-Pot Synthesis of Spirooxindole Derivatives Bearing Hexahydroquinolines Using Multicomponent Reactions Catalyzed by Ethylenediamine Diacetate
作者:Yong Lee、So Kang
DOI:10.1055/s-0033-1338506
日期:——
efficient one-potsynthesis of biologically interesting spirooxindole derivatives bearing hexahydroquinoline skeleton was accomplished by EDDA-catalyzed, three-component reactions between isatins, malononitrile, and enaminones in good yields. The value of this methodology lies in its inexpensive and nontoxic organocatalyst, mild reaction conditions, and ease of handling. A simple and efficient one-pot synthesis
for producing spiro[indoline-3,4′-quinoline] was developed in ethanol using a photocatalyst eosin y and a 22 W LED lamp. This method involves the oxidative coupling of indole with enaminone and malononitrile. This method's key features include the absence of metals, low cost, environmental friendliness, greenness, non-toxicity, ease of handling, and use of renewable energy like visible light. This method
在最近的研究中,使用光催化剂 eosin y 和 22 W LED 灯在乙醇中开发了一种直接、有效且环保的生产螺 [indoline-3,4'-quinoline] 的方法。该方法涉及吲哚与烯胺酮和丙二腈的氧化偶联。该方法的主要特点包括不含金属、成本低、环境友好、绿色、无毒、易于处理以及使用可见光等可再生能源。该方法对吲哚和活性亚甲基化合物(包括不同的烯胺酮)具有广泛的底物范围。首次在良性反应条件下使用可见光介导的无金属多组分合成制备螺环化合物。
Novel Biopolymer-Based Catalyst for the Multicomponent Synthesis of N-aryl-4-aryl-Substituted Dihydropyridines Derived from Simple and Complex Anilines
作者:Giovanna Bosica、Roderick Abdilla
DOI:10.3390/molecules29081884
日期:——
Lastly, this catalyst managed to afford an unprecedented product that was derived using an innovative technique—a combination of multicomponent reactions. Essentially, the product of our previously reported aza-Friedel–Crafts multicomponent reaction could itself be used as a reactant instead of aniline in the synthesis of more complex dihydropyridines.