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Synfacts 2011(12): 1380-1380  
DOI: 10.1055/s-0031-1289415
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

A Poly(Imidazole-Palladium) Catalyst for Allylic Arylation/Alkenylation

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada, Shaheen M. Sarkar
S. M. Sarkar, Y. Uozumi*, Y. M. A. Yamada*
RIKEN Advanced Science Institute, Wako, Institute for Molecular Science and The Graduate School for Advanced Studies, Okazaki, Japan
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Publication History

Publication Date:
18 November 2011 (online)

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Significance

A novel globular-aggregated, self-assembled supramolecular composite MPPI-Pd (3) was prepared from poly(N-isopropylacryl­amide-co-N-vinylimidazole) (1) and (NH4)2PdCl4 (2). Allylic arylation reactions of aryl acetates 4 with sodium tetraphenylborates 5 was catalyzed with MPPI-Pd (40 ppm Pd) to give the corresponding arylated products in up to 99% yield (6a-j). The allylic arylation-alkenylation with aryl/alkenylboronic acids 7 proceeded with 40 ppm of MPPI-Pd to give the corresponding aryl/alkenyl products in 97-99% yield.