Brønsted acid catalysis of achiral enamine for regio-and enantioselective nitroso aldol synthesis

N Momiyama, H Yamamoto - Journal of the American Chemical …, 2005 - ACS Publications
Two types of chiral Brønsted acid catalysts have been shown to catalyze regio-and
enantioselective nitroso aldol synthesis between nitrosobenzene and achiral enamine. The …

How we drifted into peptide chemistry and where we have arrived at

D Seebach, T Kimmerlin, R Šebesta, MA Campo… - Tetrahedron, 2004 - Elsevier
The history of peptide chemistry in our group is described. It all started with the cyclic
undecapeptide cyclosporin, the immunosuppressive compound, which is commercialised as …

Stoichiometric asymmetric processes

S Jones - Journal of the Chemical Society, Perkin Transactions 1, 2002 - pubs.rsc.org
Stoichiometric asymmetric processes - Journal of the Chemical Society, Perkin Transactions
1 (RSC Publishing) DOI:10.1039/B009236N Royal Society of Chemistry View PDF VersionPrevious …

Kinetic rationalization of nonlinear effects in asymmetric catalysis based on phase behavior

M Klussmann, SP Mathew, H Iwamura… - Angewandte Chemie …, 2006 - Wiley Online Library
A model of proline as a “kinetic conglomerate” can rationalize both the nonlinear effect in
proline‐catalyzed aldol reactions observed in early studies and the linearity observed more …

Catalytic enantioselective protonation of enol trifluoroacetates by means of hydrogenocarbonates and cinchona alkaloids

A Claraz, J Leroy, S Oudeyer… - The Journal of Organic …, 2011 - ACS Publications
Herein is disclosed an efficient catalytic enantioselective protonation of enol acetates by
means of a readily implementable transition-metal-free chemical process. By making use of …

Catalytic enantioselective Michael addition in the synthesis of α-aminophosphonates

ZM Jászay, G Németh, TS Pham, I Petneházy… - Tetrahedron …, 2005 - Elsevier
Enantioenriched (S)-phosphoglutaminic acid derivatives with up to 72% ee were obtained in
the catalytic enantioselective Michael reaction of the achiral phosphoglycine synthon. The …

Preparation and Characterization of New C2‐and C1‐Symmetric Nitrogen, Oxygen, Phosphorous, and Sulfur Derivatives and Analogs of TADDOL. Part III: Some New …

D Seebach, AK Beck, HU Bichsel… - Helvetica Chimica …, 2012 - Wiley Online Library
A brief overview is presented of the field of organocatalysis using chiral H‐bond donors,
chiral Brønsted acids, and chiral counter‐anions (Fig. 1). The role of TADDOLs (= α, α, α …

Efficient Synthesis of (−)‐(R)‐Muscone by Enantioselective Protonation

C Fehr, J Galindo, I Farris, A Cuenca - Helvetica chimica acta, 2004 - Wiley Online Library
Efficient Synthesis of (À)-(R)-Muscone by Enantioselective Protonation Page 1 Efficient
Synthesis of (À)-(R)-Muscone by Enantioselective Protonation by Charles Fehr*, Jose¬ …

The enantioselective synthesis of α-amino acid derivatives via organoboranes

MJ O'Donnell, MD Drew, JT Cooper… - Journal of the …, 2002 - ACS Publications
Optically active (S)-α-amino acids are prepared in 54− 95% ee (12 cases) by reaction of the
Schiff base acetate of glycine tert-butyl ester with B-alkyl-9-BBN derivatives in the presence …

Asymmetric epoxidation of α, β-unsaturated ketones catalyzed by rare-earth metal amides RE [N (SiMe 3) 2] 3 with chiral TADDOL ligands

H Shan, C Lu, B Zhao, Y Yao - New Journal of Chemistry, 2021 - pubs.rsc.org
The catalytic asymmetric epoxidation of α, β-unsaturated ketones by tert-butylhydroperoxide
(TBHP) has been well established using rare-earth metal amides RE [N (SiMe3) 2] 3 (RE …