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Chiral Lewis Acids (chiral + lewi_acid)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Bismuth Triflate,Chiral Bipyridine Complexes as Water-Compatible Chiral Lewis Acids.

CHEMINFORM, Issue 9 2006
Shu Kobayashi
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]

Enantioselective Chlorination and Fluorination of ,-Keto Phosphonates Catalyzed by Chiral Lewis Acids.

CHEMINFORM, Issue 31 2005
Luca Bernardi
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

Titanium(IV)/Tridentate BINOL Derivative as Catalyst for meso -Aziridine Ring-Opening Reactions: High Enantioselectivity, Strong Positive Non-Linear Effect and Structural Characterization

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2009
Rongmin Yu
Abstract A titanium-based chiral Lewis acid was found to be effective for the ring-opening reactions of meso -aziridines with aniline nucleophiles. The products were generally isolated in high yields and with high to excellent enantioselectivity. The catalytic system was studied by X-ray single crystal analysis. In experiments on non-linear effects a strong non-linear effect of the catalyst system was observed. [source]

Catalytic activation through metal enolization of nucleophile precursors and synthetic applications to enantioselective Michael additions

THE CHEMICAL RECORD, Issue 3 2007
Shuji Kanemasa
Abstract Catalytic activation methods of nucleophile precursors recently developed in our research group were reviewed in this paper. These include (i) the catalytic double activation method of nucleophile precursors through enol formation and of electrophiles through coordination in alcohols; (ii) the double catalytic activation method by use of both catalytic amounts of chiral Lewis acid and external achiral amine; (iii) the catalytic activation method of nucleophile precursors with a chiral cationic Lewis acid in the presence of molecular sieves; and (iv) the single catalytic activation of nucleophile precursors through metal enolization in alcohol media. © 2007 The Japan Chemical Journal Forum and Wiley Periodicals, Inc. Chem Rec 7: 137,149; 2007: Published online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/tcr.20105 [source]