N‐Heterocyclic Carbene Organocatalysis: Activation Modes and Typical Reactive Intermediates

X Chen, H Wang, Z Jin, YR Chi - Chinese Journal of Chemistry, 2020 - Wiley Online Library
N‐Heterocyclic carbene (NHC) organocatalysis has been developed as an important
approach in modern organic synthesis. Versatile activation modes within NHC …

On the mechanism of N-heterocyclic carbene-catalyzed reactions involving acyl azoliums

J Mahatthananchai, JW Bode - Accounts of chemical research, 2014 - ACS Publications
Catalytic reactions promoted by N-heterocyclic carbenes (NHCs) have exploded in
popularity since 2004 when several reports described new fundamental reactions that …

Diastereodivergent synthesis of enantioenriched α, β-disubstituted γ-butyrolactones via cooperative N-heterocyclic carbene and Ir catalysis

S Singha, E Serrano, S Mondal, CG Daniliuc… - Nature Catalysis, 2020 - nature.com
The stereodivergent synthesis of natural product frameworks via a single transformation
using simple starting materials is a significant challenge. The prevalence of γ-butyrolactones …

Highly enantioselective [5+ 2] annulations through cooperative N-heterocyclic carbene (NHC) organocatalysis and palladium catalysis

S Singha, T Patra, CG Daniliuc… - Journal of the American …, 2018 - ACS Publications
The highly enantioselective [5+ 2] annulation of enals with vinylethylene carbonates through
a cooperative N-heterocyclic carbene (NHC)/Pd catalytic system is reported. The use of a …

Employing homoenolates generated by NHC catalysis in carbon–carbon bond-forming reactions: state of the art

V Nair, RS Menon, AT Biju, CR Sinu, RR Paul… - Chemical Society …, 2011 - pubs.rsc.org
Homoenolate is a reactive intermediate that possesses an anionic or nucleophilic carbon β
to a carbonyl group or its synthetic equivalent. The recent discovery that homoenolates can …

Catalytic selective synthesis

J Mahatthananchai, AM Dumas… - Angewandte Chemie …, 2012 - Wiley Online Library
Complete control of the product of a catalytic reaction can be achieved on the basis of
catalyst structure, even when the reaction conditions are nearly identical. Catalyst‐controlled …

New developments of the principle of vinylogy as applied to π-extended enolate-type donor systems

C Curti, L Battistini, A Sartori, F Zanardi - Chemical reviews, 2020 - ACS Publications
The principle of vinylogy states that the electronic effects of a functional group in a molecule
are possibly transmitted to a distal position through interposed conjugated multiple bonds …

Exploiting Acyl and Enol Azolium Intermediates via N‐Hetero‐ cyclic Carbene‐Catalyzed Reactions of α‐Reducible Aldehydes

HU Vora, P Wheeler, T Rovis - Advanced synthesis & catalysis, 2012 - Wiley Online Library
N‐heterocyclic carbenes (NHC) are well known for their role in catalyzing benzoin and
Stetter reactions: the generation of acyl anion equivalents from simple aldehydes to react …

[PDF][PDF] N-Heterocyclic carbene catalyzed [4+ 3] annulation of enals and o-quinone methides: highly enantioselective synthesis of benzo-ε-lactones

H Lv, WQ Jia, LH Sun, S Ye - Angew. Chem., Int. Ed, 2013 - academia.edu
Hui Lv, Wen-Qiang Jia, Li-Hui Sun, and Song Ye* e-Lactones are privileged motifs occurring
in a wide variety of biologically active natural and unnatural products.[1] Therefore, the …

NHCs in asymmetric organocatalysis: recent advances in azolium enolate generation and reactivity

J Douglas, G Churchill, AD Smith - Synthesis, 2012 - thieme-connect.com
Organocatalysis represents a synthetic paradigm that has grown exponentially in popularity
over the last decade, arguably becoming one of the most desired synthetic methods for the …