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The epoxide opening with BF3·OEt2 followed by cleavage of the aldehyde group of the resulting β-ketoaldehyde furnishes deoxybenzoins which give the title furans after HBr-promoted ring closure. [ABSTRACT FROM AUTHOR]

A Rh(II)-catalyzed tandem intramolecular cyclization of aromatic aldehydes and ketones having a (1-sulfonyl-1,2,3-triazolyl)methoxy side chain is developed to allow a novel synthesis of the title compounds (II), (IV), and (VI). [ABSTRACT FROM AUTHOR]

The synthesis of the title compounds involves asymmetric [3 + 2] cycloaddition of 3-diazooxindoles with vinylcyclopropanes. [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 oxidative cyclization of N-alkenyl formamidines leads to the corresponding cyclic formamidinium salts. [ABSTRACT FROM AUTHOR]

An abstract of the article "Palladium-Catalyzed Cascade Cyclization of Allylamine-Tethered Alkylidenecyclopropanes: Facile Access to Iodine/Difluoromethylene- and Perfluoroalkyl-Containing 1-Benzazepine Scaffolds" by Liu-Zhu Yu and colleagues is presented.

A novel and efficient synthetic protocol to access furoquinoline and thienoquinoline derivatives is presented. [ABSTRACT FROM AUTHOR]

The newly developed facile procedure allows for the synthesis of 3-substituted isoquinoline and dihydroisoquinoline derivatives which are difficult to access by other known methods. [ABSTRACT FROM AUTHOR]

A variety of axial chiral NHC-oxazoline gold(I) complexes are synthesized and combined with Selectfluor in situ to catalyze the oxidative cycloaddition reaction of enynone and alkenes with air as green oxidant. [ABSTRACT FROM AUTHOR]

in the presence of chiral imidazoline-phosphine ligands [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 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.

Control experiments reveal that the oxidation process is probably concerted with the diamination cyclization. [ABSTRACT FROM AUTHOR]

A new selective gold(I)-catalyzed intramolecular heterocyclization of homopropargylic isothiocyanates, erroneously named propargylic thioureas, is developed, efficiently affording two kinds of cycloadducts in moderate to excellent yields with a broad substrate scope. [ABSTRACT FROM AUTHOR]

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]

A novel cinchona alkaloid derived amine catalyzes the [3 + 2] cycloaddition of oxindoles with 2-butenedioc acid esters to produce spirooxindoles with high diastereo-and enantioselectivity. [ABSTRACT FROM AUTHOR]

Various aromatic ketones undergo Pd-C catalyzed hydrogenation/cyclization reaction to form 6H-benzo[c]chromenes. [ABSTRACT FROM AUTHOR]

Novel amine-catalyzed tunable cycloadditions between allenoates and dithioesters, providing a divergent synthesis of 2,3-dihydro-1,4-oxathiines and enantioenriched thietanes is reported. [ABSTRACT FROM AUTHOR]

The title reaction affords a series of fully functionalized pyrrole derivatives (III) and (V) via rhodium azavinyl carbene intermediates. [ABSTRACT FROM AUTHOR]

The first example of the highly enantio- and diastereoselective 1,3-dipolar cycloaddition of azomethine imines with δ-substituted allenic esters is demonstrated using a chiral (S)-Me-f-KetalPhos (FEC) catalyst under optimized conditions. [ABSTRACT FROM AUTHOR]

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]

A novel cycloisomerization/rearrangement of newly synthesized yne-vinylidenecyclopropanes (I) and (III) catalyzed by a sterically hindered gold catalyst is reported. [ABSTRACT FROM AUTHOR]

The article presents chemical equations related to the article "Enantioselective Synthesis of Spirooxindoles: Asymmetric [3 + 2] Cycloaddition of (3-Isothiocyanato)oxindoles with Azodicarboxylates" by Y. Jiang and others, published in the periodical "European Journal of Organic Chemistry" in 2013.

Dicyclopropenones are selectively converted into indenediol or pentalenone derivatives under mild reaction conditions through different phosphine promoted intramolecular cyclization reactions. [ABSTRACT FROM AUTHOR]

Chemical equations for the article "Gold-Catalyzed Cascade Oxidative Cyclization and Arylation of Allenoates" by Rui Zhang, Qin Xu and others, published in "European Journal of Organic Chemnistry" in 2013 are presented.

This novel three component reaction gives an easy access to isoquinoline derivatives via a 1,4-dipolar cycloaddition reaction. [ABSTRACT FROM AUTHOR]

The reactions are catalyzed by a novel Cinchona alkaloid-derived organocatalyst and different spirocyclic products are obtained depending on the reaction conditions and the ratios of reagents. [ABSTRACT FROM AUTHOR]

The carbazoles are obtained either through 1,2-alkyl migration of the metal carbene intermediates or a Wagner-Meerwein-type 1,2-alkyl shift or through ring-opening of the cyclopropyl group by nucleophilic attack of water or an alcohol. [ABSTRACT FROM AUTHOR]

A facile protocol for preparation of bicyclo[4.2.0] heterocycles containing a nitrogen atom is developed starting from allene-alkylidenecyclopropanes. [ABSTRACT FROM AUTHOR]

A facile and versatile method for the synthesis of the title N-heterocyclic carbenes including ones which are not accessible by using previously published methods, e.g. (XIII), is presented. [ABSTRACT FROM AUTHOR]