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
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
An Efficient Method for the Synthesis of Indolo[3,2-<i>c</i>]quinoline Derivatives Catalyzed by Iodine
作者:Yujing Zhou、Meimei Zhang、Mingyue Yin、Xiangshan Wang
DOI:10.1002/cjoc.201200993
日期:2013.2
The reaction of Schiff base and indole catalyzed by iodine in DMA, subsequently treated with DDQ, gave indolo[3,2‐c]quinoline derivatives in good yields. The structure of 3e was confirmed by X‐ray diffraction analysis.
碘在DMA中催化席夫碱和吲哚的反应,随后用DDQ处理,得到的吲哚[3,2- c ]喹啉衍生物收率很高。X射线衍射分析证实了3e的结构。
Camphorsulfonic Acid Catalyzed One-Pot Three-Component Reaction for the Synthesis of Fused Quinoline and Benzoquinoline Derivatives
作者:Radhakrishna Gattu、Prasanta Ray Bagdi、R. Sidick Basha、Abu T. Khan
DOI:10.1021/acs.joc.7b02159
日期:2017.12.1
simple and an efficient one-pot three-component reaction of arylamines, aromatic aldehydes, and cyclic ketones was described for the synthesis of various fused quinoline, benzoquinoline, and naphthoquinoline derivatives by using camphorsulfonic acid as a catalyst. The exploitation of pregnenolone steroid for benzoquinolines and terephthalaldehyde for bis-benzoquinolines synthesis was achieved with 68–75%
Herein, we disclose a novel reorganization/cycloaddition between two imine units catalyzed by In(OTf)3 Lewis acid that differs from the well-known [4 + 2] cycloaddition version via the Povarovreaction. By means of this unprecedented imine chemistry, a collection of synthetically useful dihydroacridines has been synthesized. Notably, the obtained products give rise to a series of structurally novel
在此,我们公开了一种由 In(OTf) 3 Lewis 酸催化的两个亚胺单元之间的新型重组/环加成,该重组/环加成不同于众所周知的通过Povarov 反应的[4 + 2]环加成形式。通过这种前所未有的亚胺化学,合成了一系列合成有用的二氢吖啶。值得注意的是,所获得的产品产生了一系列结构新颖且可微调的吖啶鎓光催化剂,为合成提供了启发式范例,并有效地促进了一些令人鼓舞的二氢偶联反应。