Sulfones: new reagents in organocatalysis

ANR Alba, X Companyó, R Rios - Chemical Society Reviews, 2010 - pubs.rsc.org
The development of new asymmetric methodologies that afford different structures in an
enantioselective fashion is one of the most exciting goals for chemists nowadays. In this …

Cinchona alkaloids in asymmetric organocatalysis

T Marcelli, H Hiemstra - Synthesis, 2010 - thieme-connect.com
This article reviews the applications of cinchona alkaloids as asymmetric catalysts. In the last
few years, characterized by the resurgence of interest in asymmetric organocatalysis …

[PDF][PDF] Highly Enantioselective [3+ 2] Annulation of Morita–Baylis–Hillman Adducts Mediated by L‐Threonine‐Derived Phosphines: Synthesis of 3‐Spirocyclopentene …

F Zhong, X Han, Y Wang, Y Lu - Angewandte Chemie-German …, 2011 - researchgate.net
Spirocyclic oxindoles [1] are the structural motifs frequently found in many natural products
and biologically active molecules.[2] Among many spirooxindole cores, the 3, 3'-pyrrolidinyl …

Enantioselective [3+ 2] cycloaddition of allenes to acrylates catalyzed by dipeptide-derived phosphines: facile creation of functionalized cyclopentenes containing …

X Han, Y Wang, F Zhong, Y Lu - Journal of the American Chemical …, 2011 - ACS Publications
A new family of dipeptide-based chiral phosphines was designed and prepared. d-Thr-l-tert-
Leu-derived catalyst 4c promoted [3+ 2] cycloaddition of allenoates to α-substituted acrylates …

Asymmetric organocatalysis with sulfones

M Nielsen, CB Jacobsen, N Holub… - Angewandte Chemie …, 2010 - Wiley Online Library
Asymmetric organocatalysis has become a powerful tool for the synthesis of optically active
compounds. Whereas early research mainly focused on combining simple reagents as a …

A direct metal-free decarboxylative sulfono functionalization (DSF) of cinnamic acids to α, β-unsaturated phenyl sulfones

R Singh, BK Allam, N Singh, K Kumari, SK Singh… - Organic …, 2015 - ACS Publications
A metal-free room temperature decarboxylative cross-coupling between cinnamic acids and
arylsulfonyl hydrazides has been realized for the first time for the synthesis of (E)-vinyl …

Reactions of allylmagnesium reagents with carbonyl compounds and compounds with C═ N double bonds: their diastereoselectivities generally cannot be analyzed …

ND Bartolo, JA Read, EM Valentín… - Chemical reviews, 2020 - ACS Publications
This review describes the additions of allylmagnesium reagents to carbonyl compounds and
to imines, focusing on the differences in reactivity between allylmagnesium halides and …

Novel amino acid based bifunctional chiral phosphines

SX Wang, X Han, F Zhong, Y Wang, Y Lu - Synlett, 2011 - thieme-connect.com
As a significant complement to amino catalysts, phosphines are versatile Lewis base
catalysts capable of promoting a wide range of diverse organic transformations. In particular …

Recent advances in asymmetric catalysis with cinchona alkaloid-based primary amines

L Jiang, YC Chen - Catalysis Science & Technology, 2011 - pubs.rsc.org
Six years have passed since renewed attention was paid to primary amines as potential
organocatalysts in 2004. Numerous high quality studies in this field have provided chemists …

Stereocontrolled Creation of All‐Carbon Quaternary Stereocenters by Organocatalytic Conjugate Addition of Oxindoles to Vinyl Sulfone

Q Zhu, Y Lu - Angewandte Chemie, 2010 - infona.pl
Multifunktionelle Thioharnstoffkatalysatoren mit natürlichen Aminosäuren als Bestandteil
(wie die abgebildete trifunktionelle Verbindung) sind sehr effizient für die asymmetrische …