A Stereoselective Povarov Reaction Leading to exo-Tetrahydroindolo[3,2-c]quinoline Derivatives Catalyzed by Iodine
作者:Xiang-Shan Wang、Ming-Yue Yin、Wei Wang、Shu-Jiang Tu
DOI:10.1002/ejoc.201200551
日期:2012.9
We report an iodine-catalyzed Povarov reaction using indole as dienophile carried out in toluene at room temperature. This three-component reaction, coupling an aldehyde, an amine, and an indole, proved to be an efficient method for synthesizing exo-indolo[3,2-c]quinoline derivatives related to the alkaloid isocryptolepine (cryptosanguinolentine) in good yield and with high stereoselectivity.
A clean and simple synthesis procedure for benzo[f]quinolin-3-carbonyl urea and thiourea derivatives was developed based on the reaction between N-arylidenenaphthalen-2-amine and barbituric acid or thiobarbituric acid in aqueousmediacatalyzed by triethylbenzylammonium chloride (TEBAC). It was interesting that the structures of products in solvent of DMSO-d6 solution were different from those of the
基于三乙基苄基氯化铵(TEBAC)在水介质中N-芳基萘-2-胺与巴比妥酸或硫代巴比妥酸之间的反应,开发了一种清洁,简单的苯并[ f ]喹啉-3-羰基脲和硫脲衍生物的合成方法。有趣的是,在DMSO- d 6溶液的溶剂中产物的结构与保持烯醇形式的晶态不同。产物通过1 H NMR和13 C NMR进行表征,并且通过3e的X射线衍射研究确认了晶体状态。另外,选择水作为绿色溶剂。
A clean synthesis of polyhydroacridine and indenoquinoline derivatives catalyzed by triethylbenzylammonium chloride in aqueous media
An efficient and convenient synthesis of benzo[a]acridines and indeno[1,2-b]benzo[f]quinolines was achieved in high yields by the reaction of N-arylidenenaphthalen-2-amine with 1,3-dicarbonyl compounds catalyzed with triethylbenzylammmonium chloride (TEBAC) in aqueousmedia. The structures were established by spectroscopic data and further confirmed by X-ray analysis. This method provides several advantages
通过N-芳烯萘-2-胺与1,3-二羰基化合物的反应,可以高效合成苯并[ a ] r啶和茚并[1,2- b ]苯并[ f ]喹啉。三乙基苄基氯化铵(TEBAC)在水性介质中。通过光谱数据确定结构,并通过X射线分析进一步确认。该方法具有许多优点,例如中性条件,高收率和简单的后处理程序。另外,选择水作为绿色和可循环使用的溶剂。
An Unexpected Triethylbenzylammonium Chloride Catalyzed Ring Opening of 2-Pyrones in the Synthesis of 1-Arylbenzo[<i>f</i>]quinoline-2-carboxamide Derivatives in Aqueous Media
作者:Xiang-Shan Wang、Mei-Mei Zhang、Qing Li、Chang-Sheng Yao、Shu-Jiang Tu
DOI:10.1055/s-2007-990897
日期:——
Reaction of N-arylidenenaphthalen-2-amine and 4-hydroxy-6-methylpyran-2-one in aqueous media catalyzed by triethylbenzylammonium chloride (TEBAC) at 90 °C unexpectedly gave a pyrone ring-opening product 1-aryl-1,4-dihydro-3-[(E)-2-hydroxyprop-1-enyl]-N-(naphthalene-2-yl)benzo[f]quinoline-2-carboxamide. Modification of the reaction protocol resulted in a three-component reaction among N-arylidenenaphthalen-2-amine, 4-hydroxy-6-methylpyran-2-one and naphthalen-2-amine.
A Clean Procedure for the Synthesis of Chromeno[4,3-<i>b</i>]benzo[<i>f</i>]quinoline and Quinolino[4,3-<i>b</i>]benzo[<i>f</i>]quinoline Derivatives in Aqueous Media
A short and simple synthesis of chromeno[4,3-b]benzo[f]-quinoline and quinolino[4,3-b]benzo[f]quinoline derivatives were accomplished in high yields via the reaction of N-benzilidenenaphthalen-2-amine and 4-hydroxycoumarin or 4-hydroxyquinolin-2-one in aqueousmedia catalyzed by TEBAC. The structures were established by spectroscopic data and further confirmed by X-ray diffraction analysis.