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 …

[HTML][HTML] Asymmetric reactions of N-heterocyclic carbene (NHC)-based chiral acyl azoliums and azolium enolates

C Zhao, SA Blaszczyk, J Wang - Green Synthesis and Catalysis, 2021 - Elsevier
N-Heterocyclic carbene (NHC) organocatalysis has been recognized as a powerful synthetic
strategy for the construction of a wide variety of medicinally and biologically important …

Enantioselective annulations for dihydroquinolones by in situ generation of azolium enolates

A Lee, A Younai, CK Price, J Izquierdo… - Journal of the …, 2014 - ACS Publications
A convergent, catalytic asymmetric formal [4+ 2] annulation for the synthesis of
dihydroquinolones has been developed. Carboxylic acids can be employed as precursors to …

Trifluoromethylated pyrazoles via sequential (3+ 2)-cycloaddition of fluorinated nitrile imines with chalcones and solvent-dependent deacylative oxidation reactions

A Kowalczyk, G Utecht-Jarzyńska, G Mlostoń… - Organic …, 2022 - ACS Publications
A general approach for preparation of two types of polyfunctionalized 3-
trifluoromethylpyrazoles is reported. The protocol comprises (3+ 2)-cycloaddition of the in …

Organocatalytic Asymmetric [3 + 2] Cycloaddition of N-2,2,2-Trifluoroethylisatin Ketimines with β-Trifluoromethyl Electron-Deficient Alkenes: Access to Vicinally Bis …

Y You, WY Lu, ZH Wang, YZ Chen, XY Xu… - Organic …, 2018 - ACS Publications
N-2, 2, 2-Trifluoroethylisatin ketimines with β-trifluoromethyl enones, 3-trifluoroethylidene
oxindole, and 3-trifluoroethylidene benzofuranone can undergo asymmetric [3+ 2] …

Forty years after “Heterodiene syntheses with α, β-unsaturated carbonyl compounds”: enantioselective syntheses of 3, 4-dihydropyran derivatives

G Desimoni, G Faita, P Quadrelli - Chemical reviews, 2018 - ACS Publications
This review is focused on the enantioselective synthesis of 3, 4-dihydropyran derivatives,
whose importance as chiral building blocks in the synthesis of bioactive molecules and …

Catalytic Asymmetric Synthesis of Enantioenriched Heterocycles Bearing a CCF3 Stereogenic Center

YY Huang, X Yang, Z Chen, F Verpoort… - … –A European Journal, 2015 - Wiley Online Library
Given the important agricultural and medicinal application of optically pure heterocycles
bearing a trifluoromethyl group at the stereogenic carbon center in the heterocyclic …

Organocatalytic asymmetric synthesis of cyclic compounds bearing a trifluoromethylated stereogenic center: recent developments

XH He, YL Ji, C Peng, B Han - Advanced Synthesis & Catalysis, 2019 - Wiley Online Library
The broad prospects of trifluoromethylated compounds in materials science, agricultural
chemistry, and pharmaceutical chemistry have stimulated the rapid development of …

Assembly of versatile fluorine-containing structures via N-heterocyclic carbene organocatalysis

B Zhang, J Wang - Science China Chemistry, 2022 - Springer
Owing to the unique properties of fluorine-containing moieties in the pharmaceuticals,
agrochemicals and materials, several synthetic efforts (ie, enzymatic resolution, transition …

β‐Trifluoromethyl α,β‐unsaturated Ketones: Efficient Building Blocks for Diverse Trifluoromethylated Molecules

B Chaudhary, N Kulkarni, N Saiyed… - Advanced Synthesis …, 2020 - Wiley Online Library
The trifluoromethyl (CF3) group is an advantageous structural motif in various biologically
active molecules as well as materials, which is depicted by steadily increasing demand from …