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.
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。
A simple and clean procedure for the synthesis of polyhydroacridine and quinoline derivatives: reaction of Schiff base with 1,3-dicarbonyl compounds in aqueous medium
A clean and simple synthesis of benzo[c]acridine, benzo[a]acridine, pyrido[2,3-c]acridine and benzo[f]quinoline derivatives was accomplished in good to excellent yields via the reaction of Schiff base with 1,3-dicarbonyl compounds in aqueousmediumcatalyzed by TEBA. The structures were characterized by 1H NMR, IR and elemental analysis, and confirmed by X-ray diffraction study.
通过席夫碱与1的反应,可以很好地收率很好地完成苯并[ c ] ac啶,苯并[ a ] ac啶,吡啶并[2,3- c ] ac啶和苯并[ f ]喹啉衍生物的清洁,简单合成。TEBA催化的水性介质中的3-二羰基化合物。通过1 H NMR,IR和元素分析对结构进行表征,并通过X射线衍射研究证实。
I<sub>2</sub>-catalyzed reactions of schiff base and alkyl aldehyde towards benzo[<i>f</i>]quinoline derivatives
作者:Qing Li、Chang-Sheng Yao、Mei-Mei Zhang、Shu-Jiang Tu、Xiang-Shan Wang
DOI:10.1002/jhet.5570450412
日期:2008.7
A mild, efficient, and general method for the synthesis of benzo[f]quinolinederivatives via a molecular iodine-catalyzed reaction of Schiff base with alkyl aldehydes has been described. The structure of 3o was confirmed by X-ray diffraction study.
已经描述了通过席夫碱与烷基醛的分子碘催化反应合成苯并[ f ]喹啉衍生物的温和,有效和通用的方法。X射线衍射研究证实了3o的结构。