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RESEARCH ARTICLE
Contents Vol 68(11)

2-Aryl-1,3-dimethylbenzimidazolines as Effective Electron and Hydrogen Donors in Photoinduced Electron-Transfer Reactions

Eietsu Hasegawa A C and Shin-ya Takizawa B
+ Author Affiliations
- Author Affiliations

A Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan.

B Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo 153-8902, Japan.

C Corresponding author. Email: ehase@chem.sc.niigata-u.ac.jp

Australian Journal of Chemistry 68(11) 1640-1647 https://doi.org/10.1071/CH15314
Submitted: 30 May 2015  Accepted: 9 June 2015   Published: 7 July 2015

Abstract

2-Aryl-1,3-dimethylbenzimidazolines (DMBIHs) have been applied to photoinduced electron-transfer reductions of various organic substrates. Either direct or indirect electron transfer between the substrates and DMBIHs is utilized to promote the desired transformations. Photoexcitation of the substrates using light above 280 nm was carried out in the former protocol whereas a photosensitization method using materials such as substituted pyrenes, ruthenium and iridium complexes that absorb longer-wavelength light was employed in the latter. In these reactions, DMBIHs undergo initial electron transfer and subsequent proton or hydrogen atom transfer.


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