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An organocatalytic method for preparation of the labile title compounds is presented. [ABSTRACT FROM AUTHOR]

Review: [60 refs.] [ABSTRACT FROM AUTHOR]

The title cyclization is accomplished via a tandem Rauhut-Currier/Michael/Rauhut-Currrier reaction sequence to give spirocyclic oxindoles in high yields along with excellent enantio- and diastereoselectivities. [ABSTRACT FROM AUTHOR]

An abstract of the article "Enantioselective Synthesis of Spirooxindole Enols: Regioselective and Asymmetric (3 + 2) Cyclization of 3-Isothiocyanato Oxindoles With Dibenzylidene Ketones" by D. Du, Y. Jiang, Q. Xu, X.-G. Li and M. Shi is presented.

A facile method to synthesize 4-acyloxy-1,2-dihydroquinolines is established through a gold(I)-catalyzed tandem [3,3]-rearrangement and intramolecular hydroamination of propargylic esters, giving the desired products in good yields under mild conditions. [ABSTRACT FROM AUTHOR]

This highly enantioselective synthesis of dihydroisoquinoline derivatives from aromatic sulfonated imines tethered with an alkyne moiety, through a one-pot asymmetric relay catalysis of chiral-phosphine and gold catalysts, is based on an asymmetric aza-Morita-Baylis-Hillman reaction. [ABSTRACT FROM AUTHOR]

The selective formation of either the oxa-bridged-ring system (III) or ring-opened polycyclic indoline derivatives (II) is controlled by using different gold-catalyst systems. [ABSTRACT FROM AUTHOR]

The article presents chemical equations to Cinchona Alkaloid Thiourea Mediated Asymmetric Mannich Reaction of Isocyanoacetates with Isatin-Derived Ketimines and Subsequent Cyclization by M. Shi and others published in "Royal Society of Chemistry Advances" in 2015.

Title compounds are regioselectively synthesized by this new phosphine-catalyzed [4 + 1] annulation of Morita-Baylis-Hillman carbonates with oxindole-derived α,β-unsaturated imines. [ABSTRACT FROM AUTHOR]

An abstract on a study relating to spirocyclic compounds is presented which describes the asymmetric synthesis of bioxindole furans using hydroquinine anthraquinone-catalyzed domino annulation of acylidenoxindoles, isatins, and allenoates.

A highly diastereo- and enantioselective Mannich cyclization cascade reaction of trifluoromethyl-substituted cyclic ketimines and α-aryl isocyanoacetates is developed using a multi-hydrogen-bonding squaramide combined with AgOAc as the catalyst. [ABSTRACT FROM AUTHOR]

The article presents chemical equations for an article related to synthesis of 2′,3′-Dihydro-1′H-spiro[indoline-3,4&#x2032pyridin]-2-ones by annulation of vinyl ketones with oxindole byY. Wei and others, published in the periodical "Advanced Synthesis & Catalysis" in 2013.

The absolute configuration of the product is governed by the organocatalyst and not by the chiral additive which acts primarily as a proton source. [ABSTRACT FROM AUTHOR]

An abstract of the article "Cinchona Alkaloid Squaramide Catalyzed Enantioselective Hydrazination/Cyclization Cascade Reaction of α-Isocyanoacetates and Azodicarboxylates: Synthesis of Optically Active 1,2,4-Triazolines" by Mei-Xin Zhao, Hong-Lei Bi, and colleagues is presented.

The first enantioselective synthesis of title compounds (III), (V) and (VII) by a Pd-catalyzed cascade reaction employing a 2-hydroxyphenyl Pd-complex as a bis(nucleophile) generated in situ via transmetallation of boronic acid (II). [ABSTRACT FROM AUTHOR]

A highly enantioselective synthesis of title compounds (III) and (V) is presented. [ABSTRACT FROM AUTHOR]