Journal ArticleDOI
One-pot synthesis and chiral analysis of cyclopropane derivatives.
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TLDR
A user-friendly, one-pot procedure was developed to access racemic as well as enantiomerically enriched cyclopropanes and an enantiomers separation was achieved using gas chromatography on the chiral stationary phase Chirasil-beta-dex.About:
This article is published in Chirality.The article was published on 2005-01-01. It has received 33 citations till now. The article focuses on the topics: Cyclopropanation & Enantiomeric excess.read more
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Recent developments in asymmetric cyclopropanation
TL;DR: The most recent developments of asymmetric cyclopropanation in various reaction types, such as ring closure reactions, transition-metal-catalysed decomposition of diazoalkanes, and miscellaneous reactions, covering the literature from 2003 to 2007, are discussed in this paper.
Journal ArticleDOI
Side arm strategy for catalyst design: modifying bisoxazolines for remote control of enantioselection and related.
Saihu Liao,Xiu-Li Sun,Yong Tang +2 more
TL;DR: The works by us and other groups have demonstrated that the side arm strategy can be employed as a general principle for ligand and catalyst design and should not be limited to the BOX scaffolds and the reactions described in this Account.
Journal ArticleDOI
Chiral dirhodium(II) carboxylates: New insights into the effect of ligand stereo-purity on catalyst structure and enantioselectivity
TL;DR: In this paper, the authors investigated the effect of ligand stereo purity on catalyst structure and enantioselectivity of chiral dirhodium(II) carboxylate catalysts carrying N-protected tert leucine ligands.
Journal ArticleDOI
General method for the synthesis of phenyliodonium ylides from malonate esters: easy access to 1,1-cyclopropane diesters.
TL;DR: This ylide was shown to be a safer and convenient alternative to the corresponding diazo compound and a very efficient way to 1,1-cyclopropane diesters when used with a catalytic amount of Rh(2)(esp)(2).
Journal ArticleDOI
A Chiral Cagelike Copper(I) Catalyst for the Highly Enantioselective Synthesis of 1,1‐Cyclopropane Diesters
TL;DR: A cagelike bisoxazoline-derived Cu catalyst is designed and found it can promote the asymmetric cyclopropanation reaction of malonate-derived metallocarbenes with both terminal and multisubstituted olefins with high selectivity.
References
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Book
Comprehensive asymmetric catalysis
TL;DR: Ohkuma et al. as mentioned in this paper proposed an asymmetric Dihydroxylation process for carbon-Carbon double bonds and showed that it can be used for allylation of C=O.
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Dimethyloxosulfonium Methylide ((CH3)2SOCH2) and Dimethylsulfonium Methylide ((CH3)2SCH2). Formation and Application to Organic Synthesis
E. J. Corey,Michael Chaykovsky +1 more
Book
Modern Catalytic Methods for Organic Synthesis with Diazo Compounds: From Cyclopropanes to Ylides
TL;DR: Synthesis of Alpha-Diazocarbonyl Compounds Catalysts for Metal Carbene Transformations Insertion Reactions Intermolecular Cyclopropanation and Related Addition Reactions Intramolecular cyclopropaneation and related addition Reactions Cycloaddition and Substitution Reactions with Aromatic and Heteroaromatic Compounds Generation and Reactions of Ylides from DBCs X-H InsertionReactions of DBC compounds (X = N,O,S,Se,P, Halogen) The
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A Rh‐Catalyzed C−H Insertion Reaction for the Oxidative Conversion of Carbamates to Oxazolidinones
Christine G. Espino,J. Du Bois +1 more
TL;DR: The reaction is stereospecific, providing access to chiral α-branched amines from optically pure starting materials with no loss in enantiomeric excess.