HASEGAWA Eietsu

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Research Careers (Niigata University)

1. Professor, Department of Chemistry, Faculty of Science (2006/06 - )
2. Associate Professor, Department of Chemistry, Faculty of Science (1992/04 - 2006/05)
3. Research Associate, Department of Chemistry, Faculty of Science (1987/10 - 1992/03)

Academic Societies

1. The Chemical Society of Japan
2. American Chemical Society
3. The Society of Synthetic Organic Chemistry
4. The Japanese Photochemistry Association
5. Organic Electrochemistry Group (The Electrochemical Society of Japan)

Research Fields (Grant-in-Aid for Scientific Research)

1. Organic chemistry

Research Fields (ReaD)

1. Organic reactions
2. Photochemistry

Research Themes

1. Research on organic electron transfer chemistry, Ordinary Research (1987/10 - )

Papers

1. "Application of biphasic reaction procedure using ferric chloride dissolved in an imidazolium salt and benzotrifluoride (FeIm-BTF procedure) to aza-Prins cyclization reaction", E. Hasegawa, N. Hiroi, C. Osawa, E. Tayama, H. Iwamoto, Tetrahedron Lett. , Vol.51, No.50, pp.6535 - 6538(2010)
2. "Novel biphasic reaction system of ferric chloride dissolved imidazolium hexafluorophosphate and benzotrifluoride: application to electron transfer reaction of cyclopropyl silyl ethers", H. Tsuchida, E. Hasegawa, Tetrahedron, Vol.66, pp.3447 - 3451(2010)
3. "In situ generated tris(p-bromophenyl)amine radical cation promoted electron transfer reaction of cyclopropyl silyl ethers", E. Hasegawa, K. Kakinuma, T. Yanaki, S. Komata, Tetrahedron, Vol.65, pp.10876 - 10881(2009)
4. "Benzimidazoline-dimethoxypyrene. An effective promoter system for photoinduced electron transfer promoted reductive transformations of organic compounds", E. Hasegawa, H. Hirose, K. Sasaki, S. Takizawa, T. Seida, N. Chiba, Heterocycles, Vol.77, No.2, pp.1147 - 1161(2009)
5. "Cyclization and ring-expansion processes involving samarium diiodide promoted reductive formation and subsequent oxidative ring-opening of cyclopropanol derivatives", H. Tsuchida, M. Tamura, E. Hasegawa, J. Org. Chem., Vol.74, No.6, pp.2467 - 2475(2009)
6. "Tris(trimethylsilyl)silane promoted radical reaction and electron-transfer reaction in benzotrifluoride", E. Hasegawa, Y. Ogawa, K. Kakinuma, H. Tsuchida, E. Tosaka, S. Takizawa, H. Muraoka, T. Saikawa, Tetrahedron, Vol.64, pp.7724 - 7728(2008)
7. "Electron Transfer Promoted Regioselective Ring-Opening Reaction of Cyclopropyl Silyl Ethers", Eietsu Hasegawa, Naoto Yamaguchi, Hiroyasu Muraoka, Hiroyuki Tsuchida, Org. Lett., Vol.9, pp.2811 - 2814(2007)
8. "The First Example of Samarium Diiodide-Promoted Intramolecular Ketone-Ester Coupling of Ketones Tethering Acyloxyalkyl Side Chains Producing 2-Hydroxy Cyclic Hemiacetals", Eietsu Hasegawa, Kentaro Okamoto, Naoko Tanikawa, Momoe nakamura, Kazuki Iwaya, Takashi Hoshi, Toshio Suzuki, Tetrahedron Lett., Vol.47, pp.7715 - 7718(2006)
9. "Photoinduced Electron-Transfer Systems Consisting of Electron Donating Pyrenes or Anthracenes and Benzimidazolines for Reductive Transformation of Carbonyl Compounds", Eietsu Hasegawa, Shinya Takizawa, Takayuki Seida, Akira Yamaguchi, Naoto Yamaguchi, Naoki Chiba, Tomoya Takahashi, Hiroshi Ikeda, Kimio Akiyama, Tetrahedron, Vol.62, pp.6581 - 6588(2006)
10. "Cyclization and Ring-Expansion Reactions Involving Reductive Formation and Oxidative Ring-Opening of Cyclopropanol Derivatives", Eietsu Hasegawa, Hiroyuki Tsuchida, Mutsuko Tamura, Chem. Lett., Vol.34, pp.1688 - 1689(2005)

Total 25 [Show All]

Publications

1. (The textbook) "Fundamental Chemistry", Saitoh Katsuhiro, Hasegawa Eietsu, Ohmsha(2012)
2. (The book ( the science book )) "Handbook of Organic Photochemistry and Photobiology, 2nd Ed.", Eietsu Hasegawa, Masaki Kamata, CRC press(2004), Chapter 53

Presentations

1. "2-Aryl-1,3-dimethylbenzimidazolines as effective reducing reagents for Ru(bpy)3Cl2 photosensitized organic transformations ", 7th Asian Photochemistry Conference(2012)
2. "Single electron transfer as a key process to control radical reaction pathways", The 10th International Symposium on Organic Reactions(2011)
3. "Application of ferric chloride dissolved in an imidazolium salt and benzotrfluoride (FeIm-BTF procedure) to aza-Prins cyclization and sequential transformation of substituted piperidines ", The 10th International Symposium on Organic Reactions(2011)
4. "Radical rearrangements under the photoinduced electron transfer conditions", The 5th Pacific Symposium on Radical Chemistry(2011)
5. "In situ generated radical cation reagents to promote electron transfer reactions", The 2010 International Chemical Congress of Pacific Basin Societies(2010)
6. "Novel biphasic reaction system of ferric chloride dissolved imidazolium salt and benzotrifluoride: application to electron transfer reactions and Lewis acid promoted reactions", The 2010 International Chemical Congress of Pacific Basin Societies(2010)
7. "In situ generated amine radical cation promoted electron transfer reaction", Eietsu Hasegawa, The 4th Pacific Symposium on Radical Chemistry(2009)
8. "Cyclization and Ring-Expansion Processes Involving Samarium Diiodide Promoted Reductive Formation and Subsequent Oxidative Ring-Opening of Cyclopropanol Derivatives", The 9th International Symposium on Organic Reactions(2008)
9. "Photoinduced electron-transfer promoted regioselective ring-opening reaction of cyclopropanol derivatives", Eietsu Hasegawa , The 2007 Korea-Japan Symposium on Frontier Photoscience(2007)
10. "Organic Electron Transfer Reactions in Fluorous Solvents", The 2nd International Symposium on Fluorous Technologies(2007)

Total 18 [Show All]