[EN] SYNTHESIS OF PHOSPHINE LIGANDS BEARING TUNABLE LINKAGE: METHODS OF THEIR USE IN CATALYSIS<br/>[FR] SYNTHÈSE DE LIGANDS DE PHOSPHINE PORTANT UNE LIAISON RÉGLABLE : PROCÉDÉS POUR LEUR UTILISATION DANS UNE CATALYSE
申请人:THE HONG KONG POLYTECHNIC UNIV SHENZHEN RESEARCH INSTITUTE
公开号:WO2017193288A1
公开(公告)日:2017-11-16
A series of novel linked indolyl phosphine ligands for transition metals, the synthesis thereof and their use in catalytic coupling reactions are provided. The ligands provide improvements of trasition-metal-catalyzed reactions, including the range of substrates scope, reaction conditions and efficieny.
A Formal [5+1] Annulation Reaction of Sulfur Ylides and 2-(1<i>H</i>-indol-2-yl)phenols: Access to Indole-Fused 4<i>H</i>-benzo[<i>e</i>][1,3]oxazines
作者:Penghao Jia、You Huang
DOI:10.1002/adsc.201800573
日期:2018.8.17
The first sulfur ylides involved formal [5+1]‐annulation reaction was developed between prop‐2‐ynylsulfonium salts and 2‐(1H‐indol‐2‐yl)phenols. Prop‐2‐ynylsulfonium salt participates in the reaction with its β‐carbon atom and acts as a novel C1 synthon. Various indole‐fused 4H‐benzo[e][1,3]oxazines bearing a thioether moiety were constructed in good to high yields under mild conditions.
在丙-2-炔基ulf盐和2-(1 H-吲哚-2-基)酚之间开发了第一个正式的[5 + 1]-环化反应的硫酰化物。丙-2-炔基salt盐与其β-碳原子参与反应,并充当新型C 1合成子。在温和条件下,以良好或高收率构建了各种带有硫醚部分的吲哚稠合的4 H-苯并[ e ] [1,3]恶嗪。
Atroposelective Synthesis of <scp>2‐Arylindoles</scp> via Chiral Phosphoric <scp>Acid‐Catalyzed</scp> Direct Amination of Indoles<sup>†</sup>
作者:Wen Bao、Ye‐Hui Chen、Yu‐Wei Liu、Shao‐Hua Xiang、Bin Tan
DOI:10.1002/cjoc.202300589
日期:2024.4
Indole-based atropisomers are a very important class of axially chiral compounds. However, the atroposelective synthesis of axially chiral 2-arylindole remains largely unexplored. In this study, we report the successful synthesis of atropisomeric 2-arylindoles using directamination of indoles with p-quinonediimines in the presence of chiral phosphoric acid as a catalyst. Quinonediimine acts as an
A mild, expedient, one-pot trifluoromethanesulfonic anhydride mediated synthesis of N-arylimidates
作者:Mehdi Ghandi、Saleh Salahi、Mohammad Hasani
DOI:10.1016/j.tetlet.2010.11.019
日期:2011.1
The direct transformation of various secondary amides into N-arylimidates via mild electrophilic amide activation with trifluoromethanesulfonic anhydride (Tf2O) in the presence of 2-chloropyridine (2-ClPyr) is described. Low-temperature amide activation followed by C-O bond formation with 2-naphthol provides the desired N-arylimidates in short overall reaction times. In contrast, reaction with oxindole proceeds via formation of a C-C bond to give 1-(1H-indol-2-yl)naphthalene-2-ol. (C) 2010 Elsevier Ltd. All rights reserved.