T
Taku Ohta
Researcher at Niigata University
Publications - 4
Citations - 57
Taku Ohta is an academic researcher from Niigata University. The author has contributed to research in topics: Benzimidazoline & Radical cyclization. The author has an hindex of 3, co-authored 4 publications receiving 47 citations.
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Journal ArticleDOI
Aryl-substituted dimethylbenzimidazolines as effective reductants of photoinduced electron transfer reactions
Eietsu Hasegawa,Taku Ohta,Shiori Tsuji,Kazuma Mori,Ken Uchida,Tomoaki Miura,Tadaaki Ikoma,Eiji Tayama,Hajime Iwamoto,Shin-ya Takizawa,Shigeru Murata +10 more
TL;DR: In this paper, photoexcitation of the aryl chromophore of a 2-aryl substituted 1,3-dimethylbenzimidazolines (Ar-DMBIH) was investigated.
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A photo-reagent system of benzimidazoline and Ru(bpy)3Cl2 to promote hexenyl radical cyclization and Dowd–Beckwith ring-expansion of α-halomethyl-substituted benzocyclic 1-alkanones
Eietsu Hasegawa,Minami Tateyama,Tsuneaki Hoshi,Taku Ohta,Eiji Tayama,Hajime Iwamoto,Shin-ya Takizawa,Shigeru Murata +7 more
TL;DR: A combination of 2-aryl substituted 1,3-dimethyl-benzimidazolines (DMBIHs) and tris(2,2′-bipyridine)ruthenium(II) chloride, Ru(bpy)3Cl2 was used to promote photoinduced electron transfer (PET) reactions of α-halomethyl-substituted benzocyclic 1-alkanones as discussed by the authors.
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Visible Light-Promoted Metal-Free Reduction of Organohalides by 2-Naphthyl or 2-Hydroxynaphthyl-Substituted 1,3-Dimethylbenzimidazolines
TL;DR: In this article, the visible light-promoted reduction reactions of some organohalides were investigated using 2-aryl-1,3-dimethylbenzimidazolines (Ar-DMBIH) possessing 2-naphthyl or 2-hydroxyn-phthyl substituents.
Journal ArticleDOI
A Photo‐Reagent System of Benzimidazoline and Ru(bpy)3Cl2 to Promote Hexenyl Radical Cyclization and Dowd—Beckwith Ring‐Expansion of α‐Halomethyl‐Substituted Benzocyclic 1‐Alkanones.
Eietsu Hasegawa,Minami Tateyama,Tsuneaki Hoshi,Taku Ohta,Eiji Tayama,Hajime Iwamoto,Shin-ya Takizawa,Shigeru Murata +7 more
TL;DR: A benzimidazoline ligand in combination with a Ru- or Ir-complex promotes photoinduced electron-transfer reactions of α-halomethyl substituted substrates to form primary alkyl radicals via selective C-halogen bond cleavage as mentioned in this paper.