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The protocol allows for the preparation of a broad range of cis-1,3-oxazolidines in high yields and with high enantiomeric excesses. [ABSTRACT FROM AUTHOR]

The kinetic resolution of racemic propargyl vinyl ethers (I) through an enantioselective Claisen rearrangement affords chiral allenes (II) and enantiopure ethers (S)-(I). [ABSTRACT FROM AUTHOR]

An abstract of the article "The Asymmetric Synthesis of Polycyclic 3-Spirooxindole Alkaloids via the Cascade Reaction of 2-Isocyanoethylindoles" by Xiaohu Zhao, Xiaohua Liu and colleagues is presented.

An environmentally benign air-insensitive asymmetric reaction of (het)aryl and alkyl glyoxals with various alkyl alcohols is developed which provides Cannizzaro products in high yields and with high enantioselectivities. [ABSTRACT FROM AUTHOR]

Asymmetric dearomatization of indoles is achieved by a cascade reaction between isocyanoethylindole and alkylidene malonates catalyzed by a chiral N,N-dioxide/Mg catalyst. [ABSTRACT FROM AUTHOR]

Chemical equations are presented for the article "Chiral Bifunctional Guanidine-Catalyzed Enantioselective Aza-Henry Reaction of Isatin-Derived Ketimines" by B. Fang & others published in a 2015 issue of the journal "Journal of Organic Chemistry."

A chiral N,N′-dioxide complex (DPR) in combination with Sc(OTf)2 as catalytic system allows the intramolecular cyclization of various oxindole derivatives to form spirocyclic products with high diastereo- and enantioselectivities. [ABSTRACT FROM AUTHOR]

The asymmetric ring-opening/cyclization of cyclopropyl ketones with primary amine nucleophiles is catalyzed by a chiral N,N′-dioxide/scandium(III) complex through a kinetic resolution process. [ABSTRACT FROM AUTHOR]

Optimized reaction conditions including chiral ligands (I) are developed for the Michael reactions of amides (II) with nitroolefins and alkynones. [ABSTRACT FROM AUTHOR]

An abstract of the article "Asymmetric N―H Insertion of Secondary and Primary Anilines under the Catalysis of Palladium and Chiral Guanidine Derivatives" by Y. Zhu, X. Liu and colleagues is presented.

The title reaction becomes possible in the presence of Cu(I) agents and chiral cationic guanidinium salts. [ABSTRACT FROM AUTHOR]

The enantioselectivity of the alkylation products can be inverted by simply changing the substitution pattern at the aryl group of the chiral ligands. [ABSTRACT FROM AUTHOR]

The catalytic asymmetric halomaminocyclization of sulfamates (I) with NBS and the catalyst CTA provides the syn-products (II) in good selectivity. [ABSTRACT FROM AUTHOR]

An abstract of the article "Enantioselective Protonation by Aza-Michael Reaction Between Pyrazoles and α-Substituted Vinyl Ketones" by J. Zhang and colleagues is presented.

Review: 54 refs + subrefs. [ABSTRACT FROM AUTHOR]

The article presents the asymmetric α-amination of β-keto esters and β-keto amides along with the use of a chiral N,N'-Dioxide—Copper(I) Complex.

A diagram is presented regarding the enantioselective catalysis reaction of isocyanides with alkylidene malonates using A N,N'-Dioxide/Mg(OTf)2 (magnesium triflate) complex catalyst.

The highly diastereoselective and enantioselective title reaction of aryl substituted cyclopropyl ketones with mercaptoacetaldehyde is described. [ABSTRACT FROM AUTHOR]

The scalable procedure provides chiral bridged compounds in high yields and with very high diastereomeric and enantiomeric excesses. [ABSTRACT FROM AUTHOR]

The article presents chemical equation for the article "Bimetallic Gold(I)/Chiral N,N'-Dioxide Nickel(II) Asymmetric Relay Catalysis: Chemo-and Enantioselective Synthesis of Spiroketals and Spiroaminals" by j. Li and others, published in the journal "Angewandte Chemie" in 2016.

The enantioselective alkynylation of isatins catalyzed by a bifunctional guanidine/CuI catalyst under mild reaction conditions is described. [ABSTRACT FROM AUTHOR]

Chiral N,N′-dioxide ligands derived from (S)-pipecolic acid and L-proline in combination with Zn(NTf2)2 are successfully employed as catalyst system for the [2 + 2] cycloaddition of alkynones with cyclic enol ethers to give fused cyclobutenones in good yields and stereoselectivities. [ABSTRACT FROM AUTHOR]

The title reaction affords spirocyclopropane-oxindoles with contiguous tertiary and quaternary centers in high yields with excellent diastereo- and enantioselectivities through a stepwise biradical mechanism. [ABSTRACT FROM AUTHOR]

The conjugate addition of malonic esters to enynes in the presence of a scandium(III)/N,N-dioxide complex yields a range of trisubstituted allenyl ketones with good diastereomeric ratios and excellent e.e.-values. [ABSTRACT FROM AUTHOR]

A chemical reaction is presented for the article "Chiral N,N'-Dioxide-Scandium(III)-Catalyzed Asymmetric Dearomatization of 2-Naphthols Through an Amination Reaction" by X. Lian and colleagues, published in the journal "Chemistry - A European Journal" in 2015.

The design and enantioselective synthesis of cyclopropyl ketones with asymmetric ring form including thoil, alchohol and carboxylic acid based catalysis by Chiral N,N'-Dioxide-Scandium(III) Complex is demonstrated.

An abstract of the study "Asymmetric Synthesis of Furo[3,4-b]indoles by Catalytic [3 + 2] Cycloaddition of Indoles With Epoxides" by W. Chen and colleagues is presented.

An asymmetric 1,3-dipolar cycloaddition of methyleneoxindoles and cyclic azomethine imines affords spirocyclic pyrazolidines in excellent yields and enantioselectivities under mild reaction conditions. [ABSTRACT FROM AUTHOR]

The article presents information on synthesis of optically pure spiro[cyclohexane-oxindoline] derivatives via catalytic asymmetric diels-alder reaction of brassard-type diene with methyleneindolines.

The scalable title reaction of various methyleneindolinones with mono- and 1,1-disubstituted acyclic vinyl ethers, ethylvinyl sulfide (X) and dihydropyran (XII) delivers the corresponding products in high yield, with high to excellent diastereomeric excess and with excellent enantioselectivity. [ABSTRACT FROM AUTHOR]

An abstract of the article "Cooperative Chiral Guanidine/AgPF6 Catalyzed Asymmetric Isocyanoacetate Aldol Reaction with Isatins" by Y. Lu and colleagues is presented.

The catalytic asymmetric Michael addition/desymmetrization reaction of N-(2-t-butylphenyl)maleimides with unprotected 3-substituted-2-oxindoles is successfully realized using a chiral N,N′-dioxide-Sc(III) complex, leading to succinimides with two kinds of stereogenic elements: atom chirality and axial chirality. [ABSTRACT FROM AUTHOR]

The title process affords 2-acyl substituted norbornadienes in moderate to high yields with good enantiomeric excess up to 95%. [ABSTRACT FROM AUTHOR]

Moreover, the simple α-keto ester (X) can also be converted to the corresponding product (XI). [ABSTRACT FROM AUTHOR]

An abstract of the article "Scandium-Catalyzed Asymmetric 1,6-Addition of 3-Substituted Oxindoles to Linear Dienyl Ketones" by Z. Wang and colleagues is presented.

The article offers chemical equations for the article "N,N'-Dioxide/Gadolinium(III)-Catalyzed Asymmetric Conjugate Addition of Nitroalkanes to α,β -Unsaturated Pyrazolamides" by Q. Yao and others, published in a 2015 issue of the "Journal of Organic Chemistry."

The asymmetric domino Michael-alkylation reaction between cyclohexane-1,3-dione derivatives and bromonitrostyrenes is efficiently catalyzed by a chiral N,N′-dioxide organocatalyst. [ABSTRACT FROM AUTHOR]

A domino thia-Michael/aldol reaction is involved in the title synthesis. [ABSTRACT FROM AUTHOR]

A diagram is presented which explains the enantioselective synthesis of dihydrocoumarin derivatives.

The asymmetric nitroaldol reaction of nitroethane with aromatic, heteroaromatic, or α,β-unsaturated aldehydes gives the anti-β-nitroalcohols as main isomers. [ABSTRACT FROM AUTHOR]

A diagram is presented which explains the chiral N,N'-Dioxide—In(OTf)3 catalysis of asymmetric vinylogous Mukaiyama aldol reactions.

An abstract of the article "Catalytic Asymmetric Intramolecular Homologation of Ketones with α-Diazoesters: Synthesis of Cyclic α-Aryl/Alkyl β-Ketoesters" by W. Li is presented.

An abstract of the article "Direct Asymmetric Vinylogous Michael Addition of 3-Alkylidene Oxindoles to Chalcones Catalyzed by a Chiral N,N'-Dioxide Ytterbium(III) Complex" by X. Xiao and colleagues is presented.

A highly enantioselective Mannich reaction of silyl ketene imines with isatin-derived ketimines is realized by using a chiral N,N′-dioxide/ZnII catalyst. [ABSTRACT FROM AUTHOR]

Abstract: N,N′‐Dioxide/nickel(II) complexes are developed to catalyze the inverse‐electron‐demand hetero‐Diels—Alder reaction of β,γ‐unsaturated α‐ketoesters with acyclic enecarbamates. [ABSTRACT FROM AUTHOR]

The title process tolerates a wide range of functional groups and provides dihydropyranones with excellent enantioselectivities. [ABSTRACT FROM AUTHOR]

This is a highly efficient Ni(II)-catalyzed Claisen rearrangement of a variety of both propargyl and allyl vinyl ethers using a chiral N,N-dioxide as ligand. [ABSTRACT FROM AUTHOR]

The asymmetric Darzens reaction of phenacyl bromides and N-protected isatins provides various spiro-epoxyindoles. [ABSTRACT FROM AUTHOR]

The reaction can be performed on a gram-scale but it results in lower yields [50% (97% e.e.) of (IIa)]. [ABSTRACT FROM AUTHOR]

This new process proceeds under mild conditions, exhibits a broad substrate scope and functional-group tolerance, and features good air and moisture tolerance. [ABSTRACT FROM AUTHOR]