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1
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Nozawa-Kumada K, Hayashi M, Kwon E, Shigeno M, Yada A, Kondo Y. Copper-Catalyzed Intramolecular Olefinic C(sp 2)-H Amidation for the Synthesis of γ-Alkylidene- γ-lactams. Molecules 2023; 28:6682. [PMID: 37764458 PMCID: PMC10537769 DOI: 10.3390/molecules28186682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Herein, we report the copper-catalyzed dehydrogenative C(sp2)-N bond formation of 4-pentenamides via nitrogen-centered radicals. This reaction provides a straightforward and efficient preparation method for γ-alkylidene-γ-lactams. Notably, we could controllably synthesize α,β-unsaturated- or α,β-saturated-γ-alkylidene-γ-lactams depending on the reaction conditions.
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Affiliation(s)
- Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Miyagi, Japan (M.S.); (Y.K.)
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba 305-8565, Ibaraki, Japan;
| | - Masahito Hayashi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Miyagi, Japan (M.S.); (Y.K.)
| | - Eunsang Kwon
- Endowed Research Laboratory of Dimensional Integrated Nanomaterials, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Miyagi, Japan;
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Miyagi, Japan
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Miyagi, Japan (M.S.); (Y.K.)
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Kawaguchi 332-0012, Saitama, Japan
| | - Akira Yada
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba 305-8565, Ibaraki, Japan;
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Miyagi, Japan (M.S.); (Y.K.)
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Kise N, Okada K, Sakurai T. Reductive coupling of benzofuran-2,3-diones with ketones and aldehydes by low-valent titanium. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Naoki Kise
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552
- Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University, 4-101 Koyama-cho Minami, Tottori 680-8552
| | - Kohei Okada
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552
| | - Toshihiko Sakurai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552
- Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University, 4-101 Koyama-cho Minami, Tottori 680-8552
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3
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Kise N, Mitsui Y, Sakurai T. Reductive coupling of isatins with α,β-unsaturated carbonyl compounds by low-valent titanium. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Naoki Kise
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552
- Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University, 4-101 Koyama-cho Minami, Tottori 680-8552
| | - Yuki Mitsui
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552
| | - Toshihiko Sakurai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552
- Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University, 4-101 Koyama-cho Minami, Tottori 680-8552
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