Organocatalytic reactions enabled by N-heterocyclic carbenes

DM Flanigan, F Romanov-Michailidis, NA White… - Chemical …, 2015 - ACS Publications
Organocatalytic Reactions Enabled by N-Heterocyclic Carbenes | Chemical Reviews ACS
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NHC-catalyzed generation of α, β-unsaturated acylazoliums for the enantioselective synthesis of heterocycles and carbocycles

S Mondal, SR Yetra, S Mukherjee… - Accounts of Chemical …, 2019 - ACS Publications
Conspectus This Account is aimed at highlighting the recent developments in the N-
heterocyclic carbene (NHC)-catalyzed generation of α, β-unsaturated acylazolium …

Cooperative catalysis and activation with N‐heterocyclic carbenes

MH Wang, KA Scheidt - Angewandte Chemie International …, 2016 - Wiley Online Library
N‐Heterocyclic carbene (NHC) catalysis has emerged as a powerful stratagem in organic
synthesis to construct complex molecules primarily by polarity reversal (umpolung) …

N-Heterocyclic Carbene Catalysis via the α,β-Unsaturated Acyl Azolium

C Zhang, JF Hooper, DW Lupton - ACS Catalysis, 2017 - ACS Publications
First reported less than a decade ago, the α, β-unsaturated acyl azolium has emerged as a
central reactive intermediate for reaction discovery using N-heterocyclic carbene catalysis …

Additive effects on asymmetric catalysis

L Hong, W Sun, D Yang, G Li, R Wang - Chemical Reviews, 2016 - ACS Publications
This review highlights a number of additives that can be used to make asymmetric reactions
perfect. Without changing other reaction conditions, simply adding additives can lead to …

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 …

Catalysis with N‐heterocyclic carbenes under oxidative conditions

S De Sarkar, A Biswas, RC Samanta… - … –A European Journal, 2013 - Wiley Online Library
This Concept article discusses the potential of oxidative carbene catalysis in synthesis and
comprehensively covers pioneering studies as well as recent developments. Oxidative …

A dual Lewis base activation strategy for enantioselective carbene-catalyzed annulations

J Izquierdo, A Orue, KA Scheidt - Journal of the American …, 2013 - ACS Publications
A dual activation strategy integrating N-heterocyclic carbene (NHC) catalysis and a second
Lewis base has been developed. NHC-bound homoenolate equivalents derived from α, β …

Oxidative γ-addition of enals to trifluoromethyl ketones: enantioselectivity control via Lewis acid/N-heterocyclic carbene cooperative catalysis

J Mo, X Chen, YR Chi - Journal of the American Chemical Society, 2012 - ACS Publications
An oxidative γ-functionalization of enals under N-heterocyclic carbene (NHC) catalysis to
give unsaturated δ-lactones is disclosed. Enantioselectivity control involving the relatively …

[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 …