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Enantioselective Aldol Reaction (enantioselective + aldol_reaction)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Enantioselective Aldol Reaction using Recyclable Montmorillonite-Entrapped N -(2-Thiophenesulfonyl)prolinamide

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2010
Noriyuki Hara
Abstract N -(2-Thiophenesulfonyl)prolinamide could be easily introduced into Montmorillonite by a simple ion-exchange reaction. The asymmetric aldol reactions between various isatins with acetone or acetaldehyde using a heterogeneous Montmorillonite-entrapped organocatalyst afforded products with high enantioselectivity. The catalyst was readily reusable without significant loss of catalytic activity or enantioselectivity. [source]

Elucidation of Architectural Requirements from a Spacer in Supported Proline-Based Catalysts of Enantioselective Aldol Reaction

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2009
Kerem Goren
Abstract In order to delineate the properties of the spacer architecture responsible for the strong positive dendritic effect exhibited by polymer-supported proline-based catalysts, we prepared two series of polystyrene-bound model catalysts. The first series was based on a linear and partially dendritic spacers (of reduced branching and valency) imitating the length of the second generation spacer, while the second series was based on the first generation dendron spacer with one functional (proline-terminated) and one non-functional arm. Comparative studies of the model and original (fully dendritic) catalysts in the asymmetric aldol reaction of aromatic aldehydes with acetone disclose the features characteristic to the dendritic architecture, such as proximity between the terminal catalytic units and enhanced branching, as crucial for inducing higher yield and enantioselectivity in catalysis. [source]

Catalytic Enantioselective Aldol Reaction to Ketones.

CHEMINFORM, Issue 41 2006
Kounosuke Oisaki
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Dicationic ((-)-Sparteine)palladium-Catalyzed Enantioselective Aldol Reaction of Aldehydes with 1-Phenyl-1-trimethylsilyloxyethene, Proceeding via a Palladium Enolate.

CHEMINFORM, Issue 40 2006
Syun-ichi Kiyooka
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

New Chiral Bis(diphenylphospholane) Ligands: Design, Synthesis, and Application to Catalytic Enantioselective Aldol Reaction to Ketones.

CHEMINFORM, Issue 40 2005
Kounosuke Oisaki
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

ChemInform Abstract: Enantioselective Aldol Reaction of Trimethoxysilyl Enol Ethers with Aldehydes Catalyzed by p-Tol-BINAP×AgF Complex.

CHEMINFORM, Issue 17 2001
Akira Yanagisawa
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Tandem Metal- and Organocatalysis in Sequential Hydroformylation and Enantioselective Aldol Reactions

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2007
Serghei Chercheja
Abstract Metal-catalysed hydroformylation is successfully combined with organocatalysed stereoselective aldol addition into a tandem reaction sequence. This novel type of "tandem catalysis" allows access to complex molecular systems with high levels of enantioselectivity, using simple starting materials and an amino acid as the chiral catalyst. [source]

Tandem Metal- and Organocatalysis in Sequential Hydroformylation and Enantioselective Aldol Reactions.

CHEMINFORM, Issue 51 2007
Serghei Chercheja
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

A Multifunctional Proline-Based Organic Catalyst for Enantioselective Aldol Reactions.

CHEMINFORM, Issue 12 2007
Stefania Guizzetti
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]