1, 3-Dimethyl-2-phenylbenzimidazoline (DMPBI)-Acetic Acid: An Effective Reagent System for Photoinduced Reductive Transformation of α, β-Epoxy Ketones to β- …

E Hasegawa, N Chiba, A Nakajima, K Suzuki…

Index: Hasegawa; Chiba; Nakajima; Suzuki; Yoneoka; Iwaya Synthesis, 2001 , # 8 p. 1248 - 1252

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Citation Number: 17

Abstract

Abstract A combination of 1, 3-dimethyl-2-phenylbenzimidazoline (DMPBI) and acetic acid has been utilized for photoinduced reductive transformation of α, β-epoxy ketones to β- hydroxy ketones. Study on photoreactions using several proton donors revealed that acetic acid is superior to other proton donors such as HCl, p-TsOH, MeOH, and water. 1, 3- Dimethyl-2-phenylbenzimidazolium was produced in the reaction with acetic acid while N- ...