A green reaction of isatins, active cyanomethanes, and cyclic 1,3-dicarbonyl derivatives for the efficient and simple one-potthree-componentsynthesis of spirooxindole fused heterocycles in refluxing water by use of magnetically recoverable and reusable catalyst is reported. The features of this procedure are, the use of magnetically recoverable and reusable catalyst, mild reaction conditions, high
Versatile three-component synthesis of 2′-amino-1,2-dihydrospiro[(3H)-indole-3,4′-(4′H)-pyran]-2-ones
作者:V. Yu. Mortikov、Yu. M. Litvinov、A. A. Shestopalov、L. A. Rodinovskaya、A. M. Shestopalov
DOI:10.1007/s11172-008-0338-7
日期:2008.11
2-dihydrospiro[(3H)-indole-3,4′-(4′H)-pyran]-2-ones has been suggested consisting in the three-component reaction of isatins, cyanoaceticacid derivatives, and α-methylenecarbonyl compounds (β-dicarbonyl compounds, activated phenols, and OH-substituted heterocycles) in ethanol in the presence of triethylamine as a catalyst. The reaction proceeds selectively to form spiro[(3H)-indole-3,4′-(4′H)-pyrans].
Clean synthesis of spiro[indole-3,8â²-phenaleno[1,2-<i>b</i>]pyran]-9â²-carbonitriles and spiro[indole-3,4â²-pyrano[4,3-<i>b</i>]pyran]-3â²-carbonitriles by one-pot, three-component reactions
An environmentally benign three-component reaction in aqueous media has been reported for the synthesis of spiro[indole-3,8′-phenaleno[1,2-b]pyran]-9′-carbonitriles and spiro[indole-3,4′-pyrano[4,3-b]pyran]-3′-carbonitriles. J. Heterocyclic Chem., (2010).
已报道在水性介质中对环境无害的三组分反应可合成螺[吲哚-3,8'-苯并[1,2- b ]吡喃] -9'-腈和螺[吲哚-3,4' -吡喃并[4,3- b ]吡喃] -3′-腈。J.杂环化学。(2010)。
Pot, atom and step-economic (PASE) synthesis of medicinally relevant spiro[oxindole-3,4′-pyrano[4,3-<i>b</i>]pyran] scaffold
作者:Michail N. Elinson、Fedor V. Ryzhkov、Victor A. Korolev、Mikhail P. Egorov
DOI:10.1515/hc-2015-0232
日期:2016.2.1
‘on-solvent’ approach to the substituted spirooxindole-3,4′-pyrano[4,3-b]pyrans – the pharmacologically perspective substances with known antiviral, antileishmanial, anticonvulsant and anti-HIV activities – is beneficial from the viewpoint of diversity-oriented large-scale processes and represents fast and environmentally benign synthetic concept for the multicomponent reactions strategy.