Issue 21, 2018

N,N-Dimethylformamide-stabilized palladium nanoclusters as a catalyst for Larock indole synthesis

Abstract

We show that N,N-dimethylformamide-stabilized Pd nanoclusters (NCs) have high catalytic activity in the reaction of substituted 2-iodoanilines with alkynes to give 2,3-disubstituted indoles. This indole synthesis does not require phosphine ligands and proceeds with low Pd catalyst loadings. The Pd NCs were separated from the mixture after the reaction, and recycled at least three times. Transmission electron microscopy images showed that the Pd particle size before the reaction was 1.5–2.5 nm. The particle size after the reaction was 2–3 nm. X-ray photoelectron spectroscopy showed that the binding energy of the Pd NCs before the reaction was 335.0 eV.

Graphical abstract: N,N-Dimethylformamide-stabilized palladium nanoclusters as a catalyst for Larock indole synthesis

Supplementary files

Article information

Article type
Paper
Submitted
14 ก.พ. 2561
Accepted
16 มี.ค. 2561
First published
22 มี.ค. 2561
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 11324-11329

N,N-Dimethylformamide-stabilized palladium nanoclusters as a catalyst for Larock indole synthesis

K. Onishi, K. Oikawa, H. Yano, T. Suzuki and Y. Obora, RSC Adv., 2018, 8, 11324 DOI: 10.1039/C8RA01410H

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