Recent developments in next generation (S)-proline-derived chiral organocatalysts

E Juaristi - Tetrahedron, 2021 - Elsevier
In the area of asymmetric organocatalysis, significant effort has been dedicated during the
last decade to improve the performance of emblematic catalysts such as proline, as well as …

Organocatalysis in synthesis and reactions of epoxides and aziridines

R Chawla, AK Singh, LDS Yadav - RSC Advances, 2013 - pubs.rsc.org
This review systematically describes the synthesis and reactions of epoxides and aziridines
using organocatalysis, and includes their reactions like desymmetrization, regioselective …

Catalytic enantioselective intramolecular hydroamination of alkenes using chiral aprotic cyclic urea ligand on manganese (II)

B Cui, Y Zheng, H Sun, H Shang, M Du… - Nature …, 2024 - nature.com
Asymmetric catalysis for enantioselective intramolecular hydroamination of alkenes is a
critical method in the construction of enantioenriched nitrogen-containing rings, often …

Reconstitution of peptidoglycan cross-linking leads to improved fluorescent probes of cell wall synthesis

MD Lebar, JM May, AJ Meeske… - Journal of the …, 2014 - ACS Publications
The peptidoglycan precursor, Lipid II, produced in the model Gram-positive bacterium
Bacillus subtilis differs from Lipid II found in Gram-negative bacteria such as Escherichia coli …

Grignard reactions in pyridinium and phosphonium ionic liquids

L Ford, F Atefi, RD Singer, PJ Scammells - 2011 - Wiley Online Library
Abstract Alkylpyridinium (10a, R= Me and 10b, R= Et) and tetraalkylphosphonium (19) ionic
liquids which possess ether functionality were prepared and evaluated as solvents and co …

Highly enantioselective Diels–Alder reaction of Danishefsky-type diene and electron-deficient olefins catalyzed by an Yb (III)/chiral bis-urea complex

S Harada, N Toudou, S Hiraoka, A Nishida - Tetrahedron Letters, 2009 - Elsevier
The synthesis and utility of the novel axially chiral bis-urea ligand BINUREA are described.
A complex of this urea ligand with ytterbium triflate and DBU can be used in the catalytic …

Catalytic asymmetric hydrosilylation of acetophenone with new chiral thiourea ligands containing the (S)-α-phenylethyl group

E Santacruz, G Huelgas, SK Angulo… - Tetrahedron …, 2009 - Elsevier
New chiral thioureas 1–8 containing 1, 2-ethylendiamine or trans-1, 2-diaminocyclohexane
as the carbon skeleton, and containing an (S)-α-phenylethyl group have been prepared (79 …

One-pot synthesis of N-monosubstituted ureas from nitriles via Tiemann rearrangement

CH Wang, TH Hsieh, CC Lin, WH Yeh, CA Lin… - Synlett, 2015 - thieme-connect.com
Amidoximes, obtained from the reaction of nitriles with hydroxylamine, underwent Tiemann
rearrangement in the presence of benzenesulfonyl chlorides (TsCl or o-NsCl) to form the N …

[PDF][PDF] Synthesis of versatile bifunctional derivatives of chiral diamines obtained through anchimerically assisted nucleophilic substitution reactions on diastereomeric …

J Vargas-Caporali, C Cruz-Hernandez, E Juaristi - Heterocylces, 2012 - researchgate.net
Abstract Diastereomeric[(S)-1-benzylpyrrolidin-2-yl]-(R)-[(phenyl)-methanamine] and [(S)-1-
benzylpyrrolidin-2-yl]-(S)-[(phenyl) methanamine], were synthesized by selective internal …

Enantioselective Morita–Baylis–Hillman reaction catalyzed by a chiral phosphine oxide

S Kotani, M Ito, H Nozaki, M Sugiura, M Ogasawara… - Tetrahedron …, 2013 - Elsevier
An application of a hypervalent silicon complex, generated from a chiral phosphine oxide
catalyst and silicon tetrachloride, to the enantioselective organocatalytic Morita–Baylis …