Manganese-Catalyzed Redox-Neutral C−H Olefination of Ketones with Unactivated Alkenes
作者:Yuanyuan Hu、Bingwei Zhou、Hui Chen、Congyang Wang
DOI:10.1002/anie.201806287
日期:2018.9.10
presence of either palladium salts or trimethylamine N‐oxide (Me3N+O−) have been reported, but the catalytic versions remain untouched so far. Herein, the first manganese‐catalyzed redox‐neutral C−H olefination of ketones with unactivated alkenes is described, and shows a distinct reactivity with its parent stoichimetric reactions. Remarkably, mechanistic experiments and DFT calculations uncovers a unique
自1987年以来,酮,并用在任一钯盐或三甲胺的存在下的烯烃的后续反应的化学计量cyclomanganation Ñ氧化物(ME 3 Ñ + ø - )已被报道,但催化版本保持不变为止。本文描述了酮与未活化的烯烃的首次锰催化的氧化还原-中性CH烯化反应,并显示出与其母体化学计量反应明显的反应性。值得注意的是,机械实验和DFT计算揭示了Mn-Zn活化的C-H键活化的独特的协同双金属去质子化(CBMD)机理。