Search

The novel title catalyst enables facile access to corresponding cyclopentene and cyclohexene derivatives under mild conditions. [ABSTRACT FROM AUTHOR]

The intramolecular hydroarylation of methylenecyclopropanes containing aryl propargyl ethers gives 2H-chromene derivatives under mild conditions. [ABSTRACT FROM AUTHOR]

A gold-catalyzed intramolecular cycloisomerization of cyclopropenes, N- or O-tethered, affords 5-azaspiro[2.5]oct-7-enes and bicyclo[4.1.0]heptanes depending on the substitution pattern. [ABSTRACT FROM AUTHOR]

The title reaction probably involves a carbondiimide intermediate and it undergoes cyclization and thermal-induced rearrangement to give the final product. [ABSTRACT FROM AUTHOR]

The intramolecular cycloisomerization of a diverse range of substrates using Au(I)-catalysis is presented. [ABSTRACT FROM AUTHOR]

A diagram which shows the carbonylative skeleton rearrangement for 1,4-enynes through rhodium catalyzation is presented.

The novel and highly regioselective title reaction is developed. [ABSTRACT FROM AUTHOR]

An abstract of the article "Visible-Light-Induced Trifluoromethylation of Isonitrile-Substituted Methylenecyclopropanes: Facile Access to 6-(Trifluoromethyl)-7,8-dihydrobenzo k phenanthridine Derivatives" by X.-B. Hu, Y. Wei and M. Shi is presented.

The article presents chemical equations for an article "Synthesis of 5,6-Dihydropyrazolo[5,1-a]isoquinoline and Ethyl (Z)-3-Acetoxy-3-tosylpent-4-enoate Through Tertiary-amine-Catalyzed [3 + 2] Annulation" by Y. Lei and others, which appeared in 2016 issue of European Journal of Organic Chemistry.

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]

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.

Palladium/boron cooperative catalysis enables both the N-CN bond cleavage and the subsequent tautomerization of the amide group allowing for selective oxycyanation of the cyclopropylidene double bond. [ABSTRACT FROM AUTHOR]

Styryl azides (I), (III), (V), (VII) and (IX) undergo Rh-catalyzed intramolecular ring expansion producing a series of indole-fused azetidines (II) and 1H-carbazoles or related derivatives (IV), (VI), (VIII) and (X), resp., in moderate to good yields via a Rh2(III,II) nitrene radical. [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]

This copper(I)-catalyzed ring-opening-closure/trifluoromethylation cascade proceeds through a radical process. [ABSTRACT FROM AUTHOR]

The Fe-catalyzed cycloisomerization of vinylidenecyclopropanes in the presence of acetyl halide leads to 1,2-disubstituted cyclobutenes such as (II)/(III), (V)/(VI), and (IX)/(X). [ABSTRACT FROM AUTHOR]

The chemical structure for the compound fused pyridine derrivatives is presented including information on the one-pot approach to phenanthridine derivatives using two-step rhodium (I) and gold (I) catalysis.

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]

A diagram is presented which explains the chemical process of Gold- and Silver-Catalyzed Intramolecular Cyclizations of Indolylcyclopropenes for the Divergent Synthesis of Azepinoindoles and Spiroindoline Piperidines.

The novel [4 + 1] annulation reactions of maleimides afford spirocyclic products whereas [3 + 2] annulation reactions of maleic anhydride provide functionalized cyclopentenones. [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]

The article presents chemical equations related to trifluoromethylation and cyclization of aromatic-sulfonyl-group-tethered alkenes for the construction of 1,2-benzothiazinane dioxide type compounds by R. Sang and colleagues, published in the periodical "Chemistry: A European Journal" in 2013.

The article presents chemical reactions related to an article "Rhodium(I)-Catalyzed Cycloisomerization of Nitrogen-Tethered Indoles and Alkylidenecyclopropanes: Convenient Access to Polycyclic Indole Derivatives" which appeared in a 2013 issue of the periodical "Chemistry: A European Journal".

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 novel Au(I)-catalyzed 6-endo-dig cyclization of 1,1-bis(indolyl)-5-alkynes (I) and (III) is developed to give bis(indole) alkaloid analogues through a pseudo 1,5-migration of an indole moiety. [ABSTRACT FROM AUTHOR]

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]