Asymmetric aminocatalysis—gold rush in organic chemistry

P Melchiorre, M Marigo, A Carlone… - Angewandte Chemie …, 2008 - Wiley Online Library
Catalysis with chiral secondary amines (asymmetric aminocatalysis) has become a well‐
established and powerful synthetic tool for the chemo‐and enantioselective functionalization …

Cinchona‐based primary amine catalysis in the asymmetric functionalization of carbonyl compounds

P Melchiorre - Angewandte Chemie International Edition, 2012 - Wiley Online Library
Asymmetric aminocatalysis exploits the potential of chiral primary and secondary amines to
catalyze asymmetric reactions. It has greatly simplified the functionalization of carbonyl …

Cinchona alkaloids in asymmetric organocatalysis

T Marcelli, H Hiemstra - Synthesis, 2010 - thieme-connect.com
This article reviews the applications of cinchona alkaloids as asymmetric catalysts. In the last
few years, characterized by the resurgence of interest in asymmetric organocatalysis …

Synthesis of α-Amino Ketones from Terminal Alkynes via Rhodium-Catalyzed Denitrogenative Hydration of N-Sulfonyl-1,2,3-triazoles

T Miura, T Biyajima, T Fujii… - Journal of the American …, 2012 - ACS Publications
N-Sulfonyl-1, 2, 3-triazoles react with water in the presence of a rhodium catalyst to produce
α-amino ketones in high yield. An intermediary α-imino rhodium (II) carbenoid undergoes …

Die asymmetrische Aminokatalyse–Goldrausch in der organischen Chemie

P Melchiorre, M Marigo, A Carlone… - Angewandte …, 2008 - Wiley Online Library
Die Katalyse mit chiralen sekundären Aminen (asymmetrische Aminokatalyse) ist ein
leistungsfähiges Verfahren zur chemo‐und enantioselektiven Funktionalisierung von …

Direct asymmetric amination of α-branched cyclic ketones catalyzed by a chiral phosphoric acid

X Yang, FD Toste - Journal of the American Chemical Society, 2015 - ACS Publications
Here we report the direct asymmetric amination of α-substituted cyclic ketones catalyzed by
a chiral phosphoric acid, yielding products with a N-containing quaternary stereocenter in …

Recent applications of Cinchona alkaloids and their derivatives as catalysts in metal-free asymmetric synthesis

EMO Yeboah, SO Yeboah, GS Singh - Tetrahedron, 2011 - Elsevier
The Cinchona alkaloids are natural products found in the bark of trees of the genus
Cinchona. The genus comprises about 40 species of trees or shrubs in the family Rubiaceae …

Enantioselective direct α-alkylation of cyclic ketones by means of photo-organocatalysis

E Arceo, A Bahamonde, G Bergonzini… - Chemical Science, 2014 - pubs.rsc.org
We report here the first asymmetric catalytic alkylation of unmodified ketones with alkyl
halides. This metal-free approach, which requires light in order to proceed, provides a rare …

Dinuclear metal‐prophenol catalysts: development and synthetic applications

BM Trost, CI Hung, G Mata - Angewandte Chemie International …, 2020 - Wiley Online Library
The ProPhenol ligand is a member of the chiral aza‐crown family that spontaneously forms
a bimetallic complex upon treatment with alkyl metal reagents, such as Et2Zn and Bu2Mg …

Development of a chiral bis (guanidino) iminophosphorane as an uncharged organosuperbase for the enantioselective amination of ketones

T Takeda, M Terada - Journal of the American Chemical Society, 2013 - ACS Publications
Chiral bis (guanidino) iminophosphoranes were designed and synthesized as chiral
uncharged organosuperbase catalysts that facilitate activation of less-acidic pro …