Synthesis and Characterization of N, N-Dimethylformamide-Protected Palladium Nanoparticles and Their Use in the Suzuki-Miyaura Cross-Coupling Reaction

Junya Ishida; Masato Nakatsuji; Tatsuki Nagata; Hideya Kawasaki; Takeyuki Suzuki; Yasushi Obora

doi:10.1021/acsomega.0c01006

Synthesis and Characterization of N, N-Dimethylformamide-Protected Palladium Nanoparticles and Their Use in the Suzuki-Miyaura Cross-Coupling Reaction

ACS Omega. 2020 Apr 16;5(16):9598-9604. doi: 10.1021/acsomega.0c01006. eCollection 2020 Apr 28.

Authors

Junya Ishida¹, Masato Nakatsuji¹, Tatsuki Nagata¹, Hideya Kawasaki¹, Takeyuki Suzuki², Yasushi Obora¹

Affiliations

¹ Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials, and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan.
² The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.

Abstract

Herein, the synthesis of new N,N-dimethylformamide (DMF)-protected palladium nanoparticles (Pd NPs-OAc) employing Pd (OAc)₂ (= Pd(OCOCH₃)₂) as the NP precursor is reported. Pd NPs-OAc were comprehensively characterized by transmission electron microscopy, FT-IR, NMR, and X-ray photoelectron spectroscopy to determine the Pd NP size distribution and the coordination state of DMF. Pd NPs-OAc were compared with Pd NPs-Cl, using PdCl₂ as the NP precursor. The Suzuki-Miyaura cross-coupling reaction proceeded efficiently in the presence of Pd NPs-OAc and a high catalytic activity was observed with a turnover number of up to 1.5 × 10⁵. Furthermore, the Pd NP-OAc catalysts could be recycled at least five times.