5'-acetyl-2'-amino-6'-methyl-2-oxo-1,2-dihydrospiro[indole-3,4'-pyran]-3'-carbonitrile;3'-acetyl-6'-amino-2'-methyl-2-oxo-spiro[indoline-3,4'-pyran]-5'-carbonitrile;3'-acetyl-6'-amino-2'-methyl-2-oxospiro[indoline-3,4'-pyran]-5'-carbonitrile;Cambridge id 5192733;5'-acetyl-2'-amino-6'-methyl-2-oxospiro[1H-indole-3,4'-pyran]-3'-carbonitrile
An efficient and simple synthetic approach has been developed for the preparation of biologically interesting spiro[oxindole-3,4'-(4′H-pyran)] derivatives via visible light-mediated one-pot, three-component reaction of isatins, 1,3-dicarbonylcompounds and malononitrile by using an inexpensive organic dye, Na2 eosin Y, as the photocatalyst in aqueous ethyl lactate at ambient temperature. The substrate
One-Pot Three-Component Synthesis of Spirooxindoles Catalyzed by Hexamethylenetetramine in Water
作者:Guo-Dong Wang、Xiao-Nan Zhang、Zhan-Hui Zhang
DOI:10.1002/jhet.994
日期:2013.1
convenient, and multicomponent strategy for synthesis of spirooxindole derivatives has been developed. This strategy provides a rapid access to construct a diversity‐oriented library of spirooxindoles by using three simple and readily available isatin, malononitrile or cyanoacetic ester, and 1,3‐dicarbonyl compound catalyzed by hexamethylenetetramine in water.
Abstract New three-component reaction was developed via one-pot strategy for the synthesis of functionalized 3,3′-disubstituted oxindoles and spirooxindole through the reaction among isatin, malononitrile, and acetone/indole/nitromethane/acetylacetone/dimedone in ethanol as solvent without base. It was observed that all the mixed ligand transition metal complexes with triphenylphosphine worked as the
Green multi-component domino reactions (MCRs)1–7 for the synthesis of fine chemicals have attracted much recent interest.8–9 Quinolines, spiro[4H-pyran-oxindoles] and xanthenes are reported as havi...
Copper(II) acetate monohydrate: an efficient and eco-friendly catalyst for the one-pot multi-component synthesis of biologically active spiropyrans and 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives under solvent-free conditions
natural and economical catalyst for the multi-component efficientsynthesis of biologically active spiro-4H-pyran derivatives and 1H-pyrazolo[1,2-b]phthalazine-5,10-dionederivatives with excellent yields and short reaction times. The most important advantages of this procedure are its mild, non-toxic and inexpensive catalyst, one-pot synthesis, environmentally benign nature, solvent-free conditions
摘要 我们已经研究了乙酸铜(II)一水合物作为温和的,对环境无害的,天然的和经济的催化剂,用于多组分有效合成生物活性spiro-4 H -pyran衍生物和1 H -pyrazolo的催化能力[1,2] -b] phthalazine-5,10-dione衍生物,具有优异的收率和较短的反应时间。该方法最重要的优点是其温和,无毒且便宜的催化剂,一锅合成,环境友好的性质,无溶剂条件,简单的操作程序和高效的条件。 图形概要