Low-loading asymmetric organocatalysis

F Giacalone, M Gruttadauria, P Agrigento… - Chemical Society …, 2012 - pubs.rsc.org
Asymmetric organocatalysis is now recognized as the third pillar of asymmetric synthesis.
Recent years have witnessed increasing interest towards the use of highly active and …

Enantioselective organocatalytic aldol reaction using small organic molecules

V Bisai, A Bisai, VK Singh - Tetrahedron, 2012 - Elsevier
Enantioselective reactions catalyzed by small organic molecules (asymmetric
organocatalysis) have emerged as one of the most elegant cutting-edge strategies of …

Organocatalytic asymmetric assembly reactions: synthesis of spirooxindoles via organocascade strategies

D Cheng, Y Ishihara, B Tan, CF Barbas III - Acs Catalysis, 2014 - ACS Publications
Spirooxindoles have become a privileged skeleton given their broad and promising
activities in various therapeutic areas. The strategies and catalyst systems described here …

Enantioselective Michael/Cyclization Reaction Sequence: Scaffold‐Inspired Synthesis of Spirooxindoles with Multiple Stereocenters

Y Cao, X Jiang, L Liu, F Shen, F Zhang… - Angewandte Chemie …, 2011 - infona.pl
A‐spiro‐ing: The title reaction of α‐isothiocyanato imides and methyleneindolinones has
been realized for the first time using 1 as the catalyst. This newly developed synthetic …

A unique approach to the concise synthesis of highly optically active spirooxazolines and the discovery of a more potent oxindole-type phytoalexin analogue

X Jiang, Y Cao, Y Wang, L Liu, F Shen… - Journal of the American …, 2010 - ACS Publications
Drug-lead synthesis through rapid construction of chiral molecular complexity around the
biologically relevant framework using a highly efficient strategy is a key goal of organic …

One-Pot Enantioselective Synthesis of Functionalized Pyranocoumarins and 2-Amino-4H-chromenes: Discovery of a Type of Potent Antibacterial Agent

G Zhang, Y Zhang, J Yan, R Chen… - The Journal of …, 2012 - ACS Publications
Function-oriented design and synthesis of chiral small molecules with novel activity is a key
goal in modern organic chemistry. As multiple antibiotic-resistant pathogens are emerging …

Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles

B Eftekhari-Sis, M Zirak - Chemical reviews, 2015 - ACS Publications
Heterocycles are an important class of organic compounds accounting for nearly one-third of
the past decade's publications, which are in the field of heterocyclic chemistry. In fact, two …

Highly efficient and stereocontrolled construction of 3, 3′-pyrrolidonyl spirooxindoles via organocatalytic domino Michael/cyclization reaction

XL Liu, WY Han, XM Zhang, WC Yuan - Organic letters, 2013 - ACS Publications
A wide range of structurally diverse 3, 3′-thiopyrrolidonyl spirooxindoles bearing three
contiguous stereogenic centers can be smoothly obtained via a domino Michael/cyclization …

Organocatalytic direct asymmetric aldol reactions of 3-isothiocyanato oxindoles to ketones: stereocontrolled synthesis of spirooxindoles bearing highly congested …

WB Chen, ZJ Wu, J Hu, LF Cun, XM Zhang… - Organic …, 2011 - ACS Publications
The first example of a direct catalytic asymmetric intermolecular aldol reaction of 3-
isothiocyanato oxindoles to simple ketones with bifunctional thiourea-tertiary amine as …

Chiral thioureas—preparation and significance in asymmetric synthesis and medicinal chemistry

F Steppeler, D Iwan, E Wojaczyńska, J Wojaczyński - Molecules, 2020 - mdpi.com
For almost 20 years, thioureas have been experiencing a renaissance of interest with the
emerged development of asymmetric organocatalysts. Due to their relatively high acidity and …