This manuscript reports on a suitable method for the synthesis of paracyclophane type, ferrocene‐bridged chiral phosphoric acids, which bear silyl‐substituents on their paracyclophane frameworks. These acids have been obtained easily in enantiomerically pure form, by taking advantage of (S)‐(1‐phenyl‐2‐cyanoethyl)phosphorodiamidite as a phosphorylating agent. They have been used then as catalysts for
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
Chiral Sulfonimide as a Brønsted Acid Organocatalyst for Asymmetric Friedel–Crafts Alkylation of Indoles with Imines
作者:Ling-Yan Chen、Hao He、Wing-Hong Chan、Albert W. M. Lee
DOI:10.1021/jo2011335
日期:2011.9.2
Binaphthyl-based chiral sulfonimide (CSI) is demonstrated for the first time to be an efficient, strong Brønsted acid in asymmetric organocatalysis. A series of CSIs were synthesized and screened in the asymmetric Friedel–Crafts alkylation of indoles with imines. Good to excellent yields and enantioselectivities have been achieved. It was proved that it was crucial to wash the CSI catalyst with HCl
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
[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).