Recent advances of N-heterocyclic carbenes in the applications of constructing carbo-and heterocyclic frameworks with potential biological activity

MM Li, X Chen, Y Deng, J Lu - RSC advances, 2021 - pubs.rsc.org
In recent years, N-heterocyclic carbenes (NHCs) have established themselves as a
masterful and promising type of organocatalyst for the speedy construction of medicinally …

Recent synthetic strategies toward the synthesis of spirocyclic compounds comprising six-membered carbocyclic/heterocyclic ring systems

K Babar, AF Zahoor, S Ahmad, R Akhtar - Molecular Diversity, 2021 - Springer
Spirocyclic compounds fascinate the synthetic chemists due to their privileged ring system
and efficacy in drug discovery. Many natural compounds comprise spirocyclic moiety in their …

Organocatalytic asymmetric N-sulfonyl amide CN bond activation to access axially chiral biaryl amino acids

G Wang, Q Shi, W Hu, T Chen, Y Guo, Z Hu… - Nature …, 2020 - nature.com
Amides are among the most fundamental functional groups and essential structural units,
widely used in chemistry, biochemistry and material science. Amide synthesis and …

Asymmetric carbene‐catalyzed oxidation of functionalized aldimines as 1, 4‐dipoles

G Wang, QC Zhang, C Wei, Y Zhang… - Angewandte Chemie …, 2021 - Wiley Online Library
The use of functionalized aldimines has been demonstrated as newly structural 1, 4‐dipole
precursors under carbene catalysis. More importantly, enantiodivergent organocatalysis has …

NHC-Catalyzed [3+ 3] annulation of thioamides and modified enals for the enantioselective synthesis of functionalized thiazinones

A Ghosh, S Barik, AT Biju - Organic letters, 2019 - ACS Publications
N-Heterocyclic carbene (NHC)-catalyzed [3+ 3] annulation of thioamides with modified enals
allowing the enantioselective synthesis of functionalized 1, 3-thiazin-4-ones is reported. The …

Asymmetric Sequential Vinylogous Mannich/Annulation/Acylation Process of 2‐Ethylidene 1,3‐Indandiones and Isatin N‐Boc Ketimines: Access to Chiral Spiro …

IT Chen, RY Guan, JL Han - Advanced Synthesis & Catalysis, 2022 - Wiley Online Library
A catalytic asymmetric vinylogous Mannich/annulation/acylation reaction of 2‐ethylidene 1,
3‐indandiones with isatin N‐Boc ketimines has been developed, which furnished a series of …

Concise synthesis of spirocyclic dihydrophthalazines through spiroannulation reactions of aryl azomethine imines with cyclic diazo compounds

X Cai, X Song, Q Zhu, X Zhang… - The Journal of Organic …, 2022 - ACS Publications
Spiroannulation reactions are fundamental and invaluable for the synthesis of spirocyclic
compounds. Presented herein are novel cascade reactions of aryl azomethine imines with …

[HTML][HTML] 1, 3-Indanedione: An versatile building block

C Yan - Green Synthesis and Catalysis, 2023 - Elsevier
Indanone-containing compounds are very important components of various natural
products, chemical drugs, agrochemicals and functionalized material fields. 1, 3 …

Carbene-catalyzed enantioselective synthesis of γ-keto-β-silyl esters and amides

Y Zhang, X Huang, J Guo, C Wei, M Gong, Z Fu - Organic Letters, 2020 - ACS Publications
A variety of γ-keto-β-silyl esters and amides, most with extremely high enantioselectivities,
were efficiently prepared via a carbene-catalyzed formal [4+ 2] annulation followed by ring …

Regioselective and Diastereoselective Construction of Diverse Dispiro-Indanone-Fluorenone-Oxindole Motifs

D Liu, J Sun, Y Han, CG Yan - The Journal of Organic Chemistry, 2023 - ACS Publications
A convenient synthetic protocol for regioselective and diastereoselective construction of
complex dispiro-indanone-fluorenone-oxindole motifs was developed by the base-promoted …