Condensation of N-monosubstituted 2-naphthylamines, formaldehyde, and cyclic β-diketones. One-pot synthesis of 2,4-disubstituted derivatives of 1,2,3,4-tetrahydrobenzo[f]quinoline
摘要:
Various spirocyclic derivatives of 1,2,3,4-tetrahydrobenzo[f]quinoline containing substituents in the positions 2 and 4 of the ring were obtained by one-pot multicomponent condensation of available N-benzyl-2-naphthylamines, formaldehyde, and cyclic beta-diketones of cyclohexanedione series.
Rhodium-Catalyzed Dehydrogenative Annulation of <i>N</i>-Arylmethanimines with Vinylene Carbonate for Synthesizing Quinolines
作者:Yan Hu、Jiang Nan、Jiacheng Yin、Guanjie Huang、Xin Ren、Yangmin Ma
DOI:10.1021/acs.orglett.1c03231
日期:2021.11.5
Here we report a novel Rh-catalyzed C−H/C−H alkenylation of N-arylmethanimines with vinylenecarbonate acting as a vinylene unit. Forty examples of C3,C4-nonsubstituted quinolines were achieved from commercially available starting materials. This identified process features an exceedingly simple system, a lower loading of catalyst, and the capacity for postfunctionalization with bioactive molecules
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.
To produce a novel class of anticancer compounds, an efficient method for synthesizing novel β-lactone and β-lactam frameworks was developed based on the reaction of a new ketene with C=O and C=N bonds. Functionalized 2-azetidinones were efficiently synthesized by employing 2,4-dichlorophenoxylketene, which was generated in situ. The reaction of the ketene with aldehydes was not successful and in all
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。