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Your search keyword '"Yang, Huameng"' showing total 5 results
Start Over Author "Yang, Huameng" Topic c-c bond formation
5 results on '"Yang, Huameng"'

1. ChemInform Abstract: Highly Efficient Direct Allylation of Oxindoles with Simple Allylic Alcohols Enabled by Palladium/Broensted Acid Catalysis.

Author

Yang, Huameng, Zhou, Hui, Yin, Hongyu, Xia, Chungu, and Jiang, Gaoxi

Subjects
*INDOLE derivatives, *ALLYLATION, *OXINDOLES, *ALLYL alcohol, *PALLADIUM catalysts, *CHIRALITY, *DIPHOSPHINE
Abstract

Preliminary experiments towards an asymmetric allylation of (Ia) with (II) using chiral mono or diphosphine ligands furnish (IIIa) with up to 17% enantiomeric excess only. [ABSTRACT FROM AUTHOR]

Published
2015
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2. ChemInform Abstract: Triarylphosphines as Aryl Donors for Pd(II)-Catalyzed Aromatic Coupling of Oxabenzonorbornadienes.

Author

Zhou, Hui, Li, Jixing, Yang, Huameng, Xia, Chungu, and Jiang, Gaoxi

Subjects
*PHOSPHINES, *AROMATIC compounds, *PALLADIUM catalysts, *NAPHTHALENE derivatives, *COUPLING reactions (Chemistry), *BENZENE compound derivatives
Abstract

The title reaction gives aryl substituted naphthalenes as products [e.g. (III)] and tolerates various functional groups. [ABSTRACT FROM AUTHOR]

Published
2016
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3. ChemInform Abstract: Efficient Hydroarylation and Hydroalkenylation of Vinylarenes by Broensted Acid Catalysis.

Author

Liu, Muwen, Zhang, Jinlong, Zhou, Hui, Yang, Huameng, Xia, Chungu, and Jiang, Gaoxi

Subjects
*CARBON-carbon bonds, *ALKENES
Abstract

Broensted acid Tf2NH catalyzes Friedel-Crafts type head-to-tail hydroalkenylation and hydroarylation of vinylarenes [(I), (III), (V), and (VII)] under mild reaction conditions providing a readily scalable, metal-free, and practical access to bioactive trans-1,3-diaryl-1-butenes [(II), (IV), and (IX)] and cyclic analogues [(VI) and (VIII)] and 1,1-diarylalkanes (XI), resp., in high regioselectivity. [ABSTRACT FROM AUTHOR]

Published
2016
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4. ChemInform Abstract: Efficient Hydroarylation and Hydroalkenylation of Vinylarenes by Broensted Acid Catalysis.

Author

Liu, Muwen, Zhang, Jinlong, Zhou, Hui, Yang, Huameng, Xia, Chungu, and Jiang, Gaoxi

Subjects
*FRIEDEL-Crafts reaction, *DIARYL compounds, *REGIOSELECTIVITY (Chemistry)
Abstract

Broensted acid Tf2NH catalyzes Friedel-Crafts type head-to-tail hydroalkenylation and hydroarylation of vinylarenes [(I), (III), (V), and (VII)] under mild reaction conditions providing a readily scalable, metal-free, and practical access to bioactive trans-1,3-diaryl-1-butenes [(II), (IV), and (IX)] and cyclic analogues [(VI) and (VIII)] and 1,1-diarylalkanes (XI), resp., in high regioselectivity. [ABSTRACT FROM AUTHOR]

Published
2016
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5. ChemInform Abstract: Palladium-Catalyzed Highly Atom-Economical Allylation of Oxindoles with Vinyl Cyclopropanes.

Author

Cao, Ruwei, Zhang, Jinlong, Zhou, Hui, Yang, Huameng, and Jiang, Gaoxi

Subjects
*OXINDOLES, *PALLADIUM catalysts, *ALLYLATION, *CYCLOPROPANE, *VINYLATION
Abstract

Vinyl cyclopropanes can be utilized as very effective reactants in the Pd(0)-catalyzed allylic alkylation for quickly assembling an all-carbon quaternary allylic center at the 3-position of oxindole in good yields and with excellent regioselectivities. [ABSTRACT FROM AUTHOR]

Published
2016
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