[HTML][HTML] Supramolecular asymmetric catalysis mediated by crown ethers and related recognition systems

Z Zhang, Y Shao, J Tang, J Jiang, L Wang… - Green Synthesis and …, 2021 - Elsevier
In the past decades, the combination of supramolecular chemistry and catalysis has pushed
forward the emergence of supramolecular catalysis as an intersectant and challenging …

Growing Impact of Carbohydrate‐Based Organocatalysts

SK Singh, N Mishra, S Kumar, MK Jaiswal… - …, 2022 - Wiley Online Library
Organocatalysis has emerged as one of the most progressive and prevailing field of organic
synthesis to assist green chemistry. Constantly increasing demand of promising scaffolds to …

Selective synthesis of diverse spiro-oxindole-fluorene derivatives via a DABCO-promoted annulation reaction of bindone and 3-methyleneoxindoles

D Liu, X Liu, J Sun, CG Yan - The Journal of Organic Chemistry, 2021 - ACS Publications
A DABCO-promoted annulation reaction of bindone ([1, 2′-biindenylidene]-1′, 3, 3′-
trione) and 3-methyleneoxindoles showed very interesting molecular diversity under …

Enantioselective Synthesis of Bispiro [indanedione-oxindole-cyclopropane] s through Organocatalytic [2+ 1] Cycloaddition

ZF Hao, SJ Zhu, YJ Hao, WH Zhang… - The Journal of …, 2022 - ACS Publications
A series of compounds featuring a novel bispiro [indanedione-oxindole-cyclopropane]
moiety have been synthesized through a squaramide-catalyzed [2+ 1] cycloaddition …

Macrocyclic hosts in asymmetric phase-transfer catalyzed reactions

R Schettini, M Sicignano, F De Riccardis, I Izzo… - …, 2018 - thieme-connect.com
The introduction and development of neutral macrocyclic hosts capable of complexing ions
within their pre-organized cavity, has been of utmost importance in supramolecular …

Synthesis and applications of carbohydrate-based organocatalysts

E Wojaczyńska, F Steppeler, D Iwan, MC Scherrmann… - Molecules, 2021 - mdpi.com
Organocatalysis is a very useful tool for the asymmetric synthesis of biologically or
pharmacologically active compounds because it avoids the use of noxious metals, which are …

Synthesis of chiral crown ethers derived from d-galactose and their application in enantioselective reactions

Z Rapi, T Nemcsok, P Bagi, G Keglevich, P Bakó - Tetrahedron, 2019 - Elsevier
A few new α-and β-d-galactopyranoside-based chiral lariat ethers of monoaza-15-crown-5
type were synthesized. These macrocycles proved to be efficient catalysts in a few …

Construction of indeno [1, 2-a] fluorene via domino reaction of 1, 3-indanedione and 3-arylideneindolin-2-ones or chalcones

J Cao, J Sun, CG Yan - Organic & Biomolecular Chemistry, 2019 - pubs.rsc.org
An efficient synthetic protocol for novel indeno [1, 2-a] fluorene derivatives was successfully
developed by the base promoted domino reaction of 1, 3-indanedione with 3 …

Asymmetric Phase‐Transfer Catalysis–From Classical Applications to New Concepts

J Otevrel, M Waser - Asymmetric Organocatalysis: New …, 2023 - Wiley Online Library
Summary Asymmetric (ion‐pairing) phase‐transfer catalysis has emerged as a powerful
concept within the realm of asymmetric (organo)‐catalysis over the course of the last four …

Development of chiral potassium strong Brønsted base catalysts for enantioselective carbon–carbon bond-forming reactions

Y Yamashita - Chemical Communications, 2022 - pubs.rsc.org
Chiral alkaline metal Brønsted bases are traditional and reliable promoters in
enantioselective catalysis. Here, new chiral potassium strong base catalysts were …