Concerted Catalysis by Adjacent Palladium and Gold in Alloy Nanoparticles for the Versatile and Practical [2+2+2] Cycloaddition of Alkynes

A Pd‐Au alloy efficiently catalyzed the [2+2+2] cycloaddition of substituted alkynes. Whereas monometallic Pd and Au catalysts were totally ineffective, Pd‐Au alloy nanoparticle catalysts with a low Pd/Au molar ratio showed high activity to give the corresponding polysubstituted arenes in high yield...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie 2018-05, Vol.130 (21), p.6244-6248
Main Authors: Miura, Hiroki, Tanaka, Yumi, Nakahara, Karin, Hachiya, Yuka, Endo, Keisuke, Shishido, Tetsuya
Format: Article
Language:English
Subjects:
[2+2+2]-Cycloaddition
Alkine
Alkynes
Aromatic compounds
Catalysis
Catalysts
Chemistry
Cycloaddition
Gold
Heterogene Katalyse
Nanoparticles
Nanopartikel
Palladium
Palladium base alloys
Pd-Au-Legierungen
Substitutes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A Pd‐Au alloy efficiently catalyzed the [2+2+2] cycloaddition of substituted alkynes. Whereas monometallic Pd and Au catalysts were totally ineffective, Pd‐Au alloy nanoparticle catalysts with a low Pd/Au molar ratio showed high activity to give the corresponding polysubstituted arenes in high yields. A variety of substituted alkynes participated in various modes of cycloaddition under Pd‐Au alloy catalysis. The Pd‐Au alloy catalysts exhibited high air tolerance and reusability. Konzertierte Katalyse durch Pd und Au in legierten Nanopartikeln ermöglicht die effiziente [2+2+2]‐Cycloaddition von substituierten Alkinen zu polysubstituierten Arenen. Eine Vielzahl von Alkinen kann in verschiedenen Arten von Cycloadditionen unter Pd‐Au‐Katalyse umgesetzt werden. Die Pd‐Au‐Katalysatoren sind luftstabil und wiederverwendbar.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201800973