Diastereoselective Radical Tandem Addition-Cyclization Reactions of Aromatic Tertiary Amines by Semiconductor-Sensitized Photochemical Electron Transfer
作者:Siniša Marinković、Norbert Hoffmann
DOI:10.1002/ejoc.200400102
日期:2004.7
The diastereoselective radical tandem addition-cyclization reaction of N,N-dimethylaniline (2) with menthyloxyfuranone 1 was initiated by photochemically induced electron transfer using inorganic semiconductors (TiO2, ZnS, SiC and SnO2) as sensitizers. The rearomatization step, which also causes the partial reduction of 1, was studied by isotopic labeling experiments using deuterated derivatives of
N,N-二甲基苯胺 (2) 与薄荷氧基呋喃酮 1 的非对映选择性自由基串联加成环化反应是通过使用无机半导体(TiO2、ZnS、SiC 和 SnO2)作为敏化剂的光化学诱导电子转移引发的。重构化步骤也导致 1 的部分还原,通过同位素标记实验研究了使用 2 的氘代衍生物。半导体表面对这些过程的影响已被表征,并与在均质条件下获得的结果进行比较。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)