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An abstract of the article "Enantioselective Iron-Catalyzed Intramolecular Cyclopropanation Reactions" by J.-J. Shen and colleagues is presented.

This is the first asymmetric N-H insertion of α-diazoketones giving α-aminoketones in good yields and with high enantioselectivities. [ABSTRACT FROM AUTHOR]

The carboxy-directed hydrogenation prohibits the isomerization of the terminal olefins, and realizes the chemoselective hydrogenation of various dienes. [ABSTRACT FROM AUTHOR]

Chemical formulas showing highly enantioselective S-H bond insertion cooperatively catalyzed by dirhodium complexes and chiral spiro phosphoric acids are presented.

The title methodology allows the preparation of chiral α-substituted carboxylic acids in excellent yields and enantioselectivities. [ABSTRACT FROM AUTHOR]

The synthetic value of this protocol is demonstrated by an efficient preparation of nipecotic acid (VI). [ABSTRACT FROM AUTHOR]

Unsymmetrical peroxides (II) are tested under optimized conditions. [ABSTRACT FROM AUTHOR]

The cyclization of various diazo ester substrates in the presence of the optimal ligands (Sa)-INH and (Sa)-IOP is advantageous with regards to high yields, excellent enantioselectivity, and wide substrate scope. [ABSTRACT FROM AUTHOR]

The carboxy group in the substrates is crucial for this reaction as it acts as an anchor for the Ir-catalysts. [ABSTRACT FROM AUTHOR]

The reaction is carried out in the presence of phosphine PHL-1 and phosphite PHL-2 to produce both enantiomers of the desired amines, building blocks of natural products, form either (E)- or (Z)-substrates. [ABSTRACT FROM AUTHOR]

The copper catalyzed cyclization of diazoesters in the presence of a chiral spirobisoxazoline ligand proceeds under mild conditions to give the title compounds with high enantioselectivities. [ABSTRACT FROM AUTHOR]

The title compounds (II) are obtained by asymmetric hydrogenation of α-oxymethylcinnamic acids using chiral spiro phosphine-oxazoline/iridium complexes as catalysts. [ABSTRACT FROM AUTHOR]

Saturated nitroalkanes are prepared by asymmetric hydrogenation of nitroalkenes using iridium complexes with a newly prepared chiral spiro aminophosphine ligand as catalyst. [ABSTRACT FROM AUTHOR]

This method provides access to Boc-protected β,γ-unsaturated α-amino acid esters with excellent yields and enantioselectivities. [ABSTRACT FROM AUTHOR]

The SBIP-catalyzed reaction of benzofuranone alkene (I) with allenes (II) affords γ-addition [3 + 2] cycloadducts (III) with high enantioselectivity, whilst the reaction with allenes (IV) gives rise to α-addition [3 + 2] cycloadducts (V). [ABSTRACT FROM AUTHOR]

The title reaction provides a new method for the synthesis of α-diaryl acetates such as (III), (V), and (VII) in good yields and with high enantioselectivities. [ABSTRACT FROM AUTHOR]

A substituent adjacent to the pyridine N atom is crucial to block the coordination ability of the pyridine moiety, an effect which is evidently overturned by the proximate second N atom in substrate (Vb). [ABSTRACT FROM AUTHOR]

The method is extended to the preparation of (VI), the key intermediate for the synthesis of (+)-chelidonine (VII). [ABSTRACT FROM AUTHOR]