Regio- and diastereoselective dearomatizations of <i>N</i>-alkyl activated azaarenes: the maximization of the reactive sites
作者:Hong-Jie Miao、Le-Le Wang、Hua-Bin Han、Yong-De Zhao、Qi-Lin Wang、Zhan-Wei Bu
DOI:10.1039/c9sc04880d
日期:——
An unprecedented base-promoted multi-component one-pot dearomatization of N-alkyl activated azaarenes was developed, which enabled the synthesis of complex and diverse bridged cyclic polycycles with multiple stereocenters in a highly regio- and diastereoselective manner. Besides, we realized the step-controlled dearomative bi- and trifunctionalization of quinolinium salts. These transformations not
Regioselective and Diastereoselective Dearomative Multifunctionalization of In-Situ-Activated Azaarenes: An Access to Bridged Azaheterocycles
作者:Xu-Guan Bai、Hong-Jie Miao、Yang Zhao、Qi-Lin Wang、Zhan-Wei Bu
DOI:10.1021/acs.orglett.0c01648
日期:2020.7.2
azaarenes through an in situ activation strategy, which not only achieved the first full exploitation of the reactive sites of the azaarenes, but also accomplished the efficient synthesis of bridged hydrogenated pyridines and (iso)quinolines in a highlyregioselective and diastereoselective manner. In addition, we could successfully realize the step-controlled dearomative trifunctionalization and bifunctionalization
An Efficient Synthesis of Polyfunctionalized Indole Derivatives via Three-component Domino Reaction Catalyzed by<i>L</i>-Proline
作者:Lei Fu、Wei Lin、Zhi-Bin Huang、Da-Qing Shi
DOI:10.1002/jhet.2133
日期:2015.7
A facile and efficient one‐pot procedure for the preparation of indeno[1,2‐b]indole derivatives viathree‐component domino reaction of ninhydrin, enaminones, and malononitrile catalyzed by L‐proline is described. In this reaction, two rings and four bonds were formed by one‐pot.
描述了一种通过L-脯氨酸催化的茚三酮,烯胺酮和丙二腈的三组分多米诺反应,快速简便地制备茚并[1,2- b ]吲哚衍生物的方法。在该反应中,一锅形成两个环和四个键。
Substrate-directed divergent synthesis of fused indole polycycles through Rh(<scp>ii</scp>)-catalyzed cascade reactions of bis(diazo)indolin-2-ones
作者:Yang Zhao、Xinyue Niu、Hong Yang、Jing Yang、Zhizeng Wang、Qilin Wang
DOI:10.1039/d2cc02686d
日期:——
substrate-directed diverse synthetic strategy toward two kinds of structurally intriguing fused indole polycycles through Rh(II)-catalyzed cascade reactions of bis(diazo)indolin-2-ones with enaminones. The subtle structural changes in enaminones lead to different reactivities. Cyclic enaminones produce indolo[2,3-b]indoles, whereas acyclic ones afford oxazolo[3,2-a]indoles.
在此,我们通过 Rh( II ) 催化的双 (diazo)indolin-2-ones 与烯胺酮的级联反应,报告了一种以底物为导向的多样化合成策略,可制备两种结构有趣的稠合吲哚多环化合物。烯胺酮的细微结构变化导致不同的反应性。环状烯胺酮产生吲哚[2,3- b ]吲哚,而无环烯胺酮产生恶唑并[3,2- a ]吲哚。