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Enantioselective nitroaldol reaction catalyzed by sterically modified salen-chromium complexes.
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A group of modified (salen)Cr(III)Cl complexes with bulky benzylic substituents in the 3,3'-position of the salicylidene moiety have been successfully applied for the asymmetric nitroaldol reaction.Abstract:
A group of modified (salen)Cr(III)Cl complexes with bulky benzylic substituents in the 3,3′-position of the salicylidene moiety have been successfully applied for the asymmetric nitroaldol reaction...read more
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Multidentate unsymmetrically-substituted Schiff bases and their metal complexes: Synthesis, functional materials properties, and applications to catalysis
Xiang Liu,Xiang Liu,Carolina Manzur,Néstor Novoa,Salvador Celedón,David Carrillo,Jean-René Hamon +6 more
TL;DR: A review of the recent developments of unsymmetrically-substituted multidentate Schiff bases whose steric and electronic characteristics are easily manipulated by selecting suitable condensing aldehydes or ketones and primary amines, and on their metal complexes can be found in this article.
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Asymmetric Catalysis Using Chiral Salen-Metal Complexes: Recent Advances.
Subrata Shaw,James D. White +1 more
TL;DR: This review primarily summarizes developments in chiral salen-metal catalysis over the last two decades with particular emphasis on those applications of importance in asymmetric synthesis.
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A Highly Diastereo- and Enantioselective Copper(I)-Catalyzed Henry Reaction Using a Bis(sulfonamide)−Diamine Ligand
Wei Jin,Xincheng Li,Boshun Wan +2 more
TL;DR: With the assistance of pyridine, a CuBr-3a system promotes the diastereoselective Henry reaction with various aldehyde substrates and gives the corresponding syn-selective adduct with up to a 99% yield and 32.3:1 syn/anti selectivity.
Journal ArticleDOI
Synthesis of C1-symmetric chiral secondary diamines and their applications in the asymmetric copper(II)-catalyzed Henry (nitroaldol) reactions.
TL;DR: The low catalyst loading, excellent yields and enantioselectivities, inexpensive copper salt, and mild reaction conditions make the catalytic system to be practically useful.
Journal ArticleDOI
Synthesis of Amino-Functionalized Sulfonimidamides and Their Application in the Enantioselective Henry Reaction
Marianne Steurer,Carsten Bolm +1 more
TL;DR: Application of the resulting stereochemically homogeneous sulfonimidamides as ligands in asymmetric copper-catalyzed Henry reactions of aromatic aldehydes with nitromethane led to products with enantioselectivities up to 95% ee in good yields.
References
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Journal ArticleDOI
Metal–Salen Schiff base complexes in catalysis: practical aspects
TL;DR: Practical guidelines for the preparation and use of different Schiff base metal complexes in the field of catalytic transformations are discussed in this tutorial review.
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Catalytic activities of Schiff base transition metal complexes
K.C. Gupta,Alekha Kumar Sutar +1 more
TL;DR: A review of the catalytic activity of metal complexes of binaphthyl compounds and their combinations with salen Schiff base is presented in this paper, where the pyridyl bis (imide) and pyridine bis(imine) complexes of cobalt(II), iron(II) ions have been used as catalysts in the polymerization of ethylene and propylene.
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Utilisation of homogeneous and supported chiral metal(salen) complexes in asymmetric catalysis
TL;DR: The first salen ligand and Cu complex were discovered in 1889, and gradually the potential catalytic activity of subsequent salen species has been recognised, particularly in the case of achiral salen complexes in oxidation reactions.
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