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 …

α-Imino esters in organic synthesis: recent advances

B Eftekhari-Sis, M Zirak - Chemical Reviews, 2017 - ACS Publications
α-Imino esters are useful precursors for the synthesis of a variety of types of natural and
unnatural α-amino acid derivatives, with a wide range of biological activities. Due to the …

Organocatalysis: key trends in green synthetic chemistry, challenges, scope towards heterogenization, and importance from research and industrial point of view

IR Shaikh - Journal of Catalysts, 2014 - Wiley Online Library
This paper purports to review catalysis, particularly the organocatalysis and its origin, key
trends, challenges, examples, scope, and importance. The definition of organocatalyst …

Catalytic enantioselective flow processes with solid‐supported chiral catalysts

C Rodríguez‐Escrich, MA Pericàs - The Chemical Record, 2019 - Wiley Online Library
Sustainability concerns are the wind in the sails for the development of novel, more selective
catalytic processes. Hence, chiral catalysts play a crucial role in the green production of …

A solid‐supported organocatalyst for continuous‐flow enantioselective aldol reactions

C Ayats, AH Henseler, MA Pericàs - ChemSusChem, 2012 - Wiley Online Library
Asymmetric aldol reactions catalyzed by a novel polystyrene‐immobilized proline derivative
occur in short reaction times with excellent diastereo‐and enantioselectivity. The catalyst …

Organocatalysis on tap: enantioselective continuous flow processes mediated by solid‐supported chiral organocatalysts

C Rodríguez‐Escrich… - European Journal of …, 2015 - Wiley Online Library
Sustainability concerns are reshaping the way chemists work, not only at the stage of
process design, but also when actually performing reactions. This change in outlook is …

A solid-supported organocatalyst for asymmetric Mannich reaction to construct C2-quaternary indolin-3-ones

JX An, FF Yang, P Wang, ZC Gu, Y Li, L Chen… - RSC …, 2022 - pubs.rsc.org
A simple and novel solid-supported organocatalyst from a 2-chlorotrityl chloride resin-
immobilized 4-hydroxyproline was developed, and this organocatalyst has been used for the …

Asymmetric anti-Mannich reactions in continuous flow

R Martín-Rapún, S Sayalero, MA Pericas - Green chemistry, 2013 - pubs.rsc.org
A polystyrene-supported, pyrrolidine-based catalyst depicting very high activity and
excellent stereoselectivity in the anti-Mannich reaction of aldehydes and ketones has been …

Continuous Flow Enantioselective Three-Component anti-Mannich Reactions Catalyzed by a Polymer-Supported Threonine Derivative

C Ayats, AH Henseler, E Dibello, MA Pericàs - ACS Catalysis, 2014 - ACS Publications
A series of primary amino acid-derived polystyrene-supported organocatalysts was tested in
anti-selective Mannich reactions. The polystyrene-immobilized threonine derivative showed …

A Highly Diastereoselective Decarboxylative Mannich Reaction of β-Keto Acids with Optically Active N-Sulfinyl α-Imino Esters

CF Yang, C Shen, JY Wang, SK Tian - Organic letters, 2012 - ACS Publications
A range of protected γ-oxo-α-amino esters have been prepared in a highly regio-and
stereoselective manner through the decarboxylative Mannich reaction of β-keto acids with …