Catalysis of surface dispersed Cu2+ species on t-ZrO2: square-planar Cu catalyzed cross-coupling of arylboronic acid and imidazole

Kondo, Masaru; Joutsuka, Tatsuya; Fujiwara, Kakeru; Honma, Tetsuo; Nishijima, Masahiko; Tada, Shohei

Catalysis of surface dispersed Cu2+ species on t-ZrO2: square-planar Cu catalyzed cross-coupling of arylboronic acid and imidazole

Kondo, Masaru; Joutsuka, Tatsuya; Fujiwara, Kakeru et al.

Catalysis science and technology, 2023, 13(7), 2247-2254

Permalink : https://hdl.handle.net/2115/91243

このアイテムのアクセス数:358件（2026-01-23 10:30 集計）

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アクセス権	open access
URI	https://hdl.handle.net/2115/91243
タイトル	Catalysis of surface dispersed Cu2+ species on t-ZrO2: square-planar Cu catalyzed cross-coupling of arylboronic acid and imidazole
著者	Kondo, Masaru ; Joutsuka, Tatsuya ; Fujiwara, Kakeru ; Honma, Tetsuo ; Nishijima, Masahiko ; Tada, Shohei
e-Rad_Researcher 10816846 著者名 Kondo, Masaru
e-Rad_Researcher 70823003 著者名 Joutsuka, Tatsuya
e-Rad_Researcher 70816628 著者名 Fujiwara, Kakeru
e-Rad_Researcher 50443560 著者名 Honma, Tetsuo
著者名 Nishijima, Masahiko
e-Rad_Researcher 60769941 著者名 Tada, Shohei
言語	英語
発行日	2023-04-07
出版者	Royal Society of Chemistry
収録物名	Catalysis science and technology
巻(号)	13(7)
ページ	2247-2254
抄録	We examined the Chan-Lam cross-coupling of imidazole and arylboronic acids under additive-free and mild conditions using heterogeneous CuO/MOX catalysts such as metal oxide-supported CuO and Cu-doped metal oxides. Among them, CuO/t-ZrO2 exhibited the best performance, which was more than ten times the turnover number in comparison with that of bulk CuO. By combining experimental and computational approaches, we elucidated the surface structure of CuO/t-ZrO2. The catalyst contained abundant highly reducible Cu2+ species, in contrast to other Cu2+-containing catalysts. Notably, X-ray absorption spectroscopy and density functional theory calculations revealed that the Cu2+ species are square-planar [CuO4]. Our results indicate that the highly active [CuO4] species play a key role in the present coupling reaction.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	2044-4753
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1039/d3cy00024a