Benzimidazoline-Dimethoxypyrene. An Effective Promoter System for Photoinduced Electron Transfer Promoted Reductive Transformations of Organic Compounds
作者:Eietsu Hasegawa、Harumi Hirose、Kosuke Sasaki、Shinya Takizawa、Takayuki Seida、Naoki Chiba
DOI:10.3987/com-08-s(f)94
日期:——
2-(p-Methoxyphenyl)-1,3-dimethylbenzimidazoline (ADMBI) and 2-(o-hydroxyphenyl)-1,3-dimethylbenzimidazoline (HPDMBI) are used as reducing reagents in 1,8-dimethoxypyrene (1,8-DMP) sensitized, photoinduced electron transfer (PET) reactions. This system was effectively used for PET induced, reductive transformations of various organic substrates, including α,β-epoxy ketones, the olefin tethered 2-br
2-(对甲氧基苯基)-1,3-二甲基苯并咪唑啉 (ADMBI) 和 2-(邻羟基苯基)-1,3-二甲基苯并咪唑啉 (HPDMBI) 用作 1,8-二甲氧基芘 (1,8-DMP) 中的还原剂) 敏化的光致电子转移 (PET) 反应。该系统可有效用于 PET 诱导的各种有机底物的还原转化,包括 α,β-环氧酮、烯烃束缚的 2-溴甲基-1-四氢萘酮和邻烯丙氧基碘苯,以及脱保护反应十二烷基-2-苯甲酰苯甲酸酯和N-磺酰基吲哚。研究结果表明,1,8-DMP 是一种比以前使用的 9-甲基咔唑更有效的敏化剂,可用于 N-甲基-4-吡啶酯的脱保护。