Optically Active 1,1′-Spirobiindane-7,7′-diol (SPINOL)-Based Phosphoric Acids as Highly Enantioselective Catalysts for Asymmetric Organocatalysis
作者:Chun-Hui Xing、Yuan-Xi Liao、Jaclynn Ng、Qiao-Sheng Hu
DOI:10.1021/jo200302x
日期:2011.5.20
of optically active 1,1′-spirobiindane-7,7′-diol (SPINOL)-based phosphoricacids are described. These SPINOL-based phosphoricacids were prepared from (R)-SPINOL in three steps and exhibited excellent enantioselectivities for the reactions of indoles with aldimines and β,γ-unsaturated-α-ketoesters. Our study provides a family of promising chiral phosphoricacids to the asymmetric organocatalysis toolbox
Enantioselective Continuous-Flow Production of 3-Indolylmethanamines Mediated by an Immobilized Phosphoric Acid Catalyst
作者:Laura Osorio-Planes、Carles Rodríguez-Escrich、Miquel A. Pericàs
DOI:10.1002/chem.201303860
日期:2014.2.17
polystyrene‐supported 1,1’‐bi‐2‐naphthol derived phosphoricacid has been synthesized and applied in the enantioselective Friedel–Crafts reaction of indoles and sulfonylimines. The immobilizedcatalyst was highly active and selective, and gave rise to a broad range of 3‐indolylmethanamines (19 examples) in high yields and excellent enantioselectivities (up to 98 % enantiomeric excess) after short reaction
Dinuclear zinc catalyzed asymmetric Friedel–Crafts amidoalkylation of indoles with aryl aldimines
作者:Bei-Lei Wang、Nai-Kai Li、Jin-Xin Zhang、Guo-Gui Liu、Teng Liu、Qi Shen、Xing-Wang Wang
DOI:10.1039/c0ob01200a
日期:——
The asymmetric Friedel–Crafts amidoalkylation of indoles with aryl aldimines could be efficiently catalyzed by Trost's bis-ProPhenol dinuclear zinc complexes to attain 3-indolyl methanamine derivatives in good to excellent yields (85–98%) with moderate to high enantiomeric ratios (from 70 : 30 up to 95 : 5 er). Remarkably, this approach provides efficient access to enantiomerically enriched 3-indolyl
Design of Planar Chiral Phosphoric Acids with a [2.2]Paracyclophanyl Backbone as Organocatalysts for the Highly Enantioselective Aza-Friedel–Crafts Reaction
作者:En Xie、Shaoying Huang、Xufeng Lin
DOI:10.1021/acs.orglett.9b01127
日期:2019.5.17
A new type of robust planarchiral phosphoric acid bearing a [2.2]paracyclophane scaffold was synthesized and shown to be an optimal catalyst in asymmetric aza-Friedel–Crafts reactions for the first synthesis of enantioenriched styryl indolylmethanamine derivatives in good yields with excellent enantioselectivities (93–>99% ee) under 0.5–1 mol % catalyst loading.
[EN] POLYMER SUPPORTED PHOSPHORIC ACIDS AND USE THEREOF AS CATALYSTS IN THE PREPARATION OF 3-INDOLYLMETHANAMINES<br/>[FR] ACIDES PHOSPHORIQUES SUPPORTÉS SUR POLYMÈRES ET LEUR UTILISATION EN TANT QUE CATALYSEURS DANS LA PRÉPARATION DE 3-INDOLYLMÉTHANAMINES
申请人:FUNDACIÓ INST CATAL D INVESTIGACIÓ QUÍMICA ICIQ
公开号:WO2015086793A1
公开(公告)日:2015-06-18
The present invention relates to the field of catalysis, more particularly to the field of organocatalysis and to polymer supported chiral phosphoric acid catalysts. It also relates to the use of these compounds in the preparation of chiral 3-indolylmethanamines Formula (I).