Highly active and reusable hydrotalcite-supported Pd(0) catalyst for Suzuki coupling reactions of aryl bromides and chlorides

A palladium(0) nanocluster supported on hydrotalcite has been prepared and tested for the Suzuki coupling reaction. The prepared catalyst showed very efficient catalytic activity for cross coupling of iodo- and bromoarenes under very mild reaction conditions, affording >90% yield. Under the optim...

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Bibliographic Details
Published inTetrahedron Vol. 74; no. 9; pp. 948 - 954
Main Authors Karanjit, Sangita, Kashihara, Masaya, Nakayama, Atsushi, Shrestha, Lok Kumar, Ariga, Katsuhiko, Namba, Kosuke
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2018
Subjects
Aryl chlorides
Heterogenous catalyst
Palladium nanocluster
Suzuki coupling
Suzuki coupling
Palladium nanocluster
Aryl chlorides
Heterogenous catalyst
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Summary:A palladium(0) nanocluster supported on hydrotalcite has been prepared and tested for the Suzuki coupling reaction. The prepared catalyst showed very efficient catalytic activity for cross coupling of iodo- and bromoarenes under very mild reaction conditions, affording >90% yield. Under the optimized reaction conditions, chloroarenenes also showed very good reactivity. Transmission electron microscopic imaging data showed the formation of very small Pd(0)-nanoclusters (d = 2.2 ± 0.5 nm) well dispersed on the support, which enhanced the activity and stability of the catalyst for the Suzuki cross-coupling reaction. This catalytic system offers an easy method of preparation with good activity and reusability up to five cycles. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2017.12.056