A Mild and Convenient Method for the Reduction of Organic Halides by Using a SmI<sub>2</sub>-THF Solution in the Presence of Hexamethylphosphoric Triamide (HMPA)
A remarkable effect of HMPA was observed in the reduction of organic halides with a SmI2-THF solution. Various types of organic halides were reduced rapidly to the corresponding alkanes in almost quantitative yields under mild reaction conditions.
Photoinduced Radical Borylation of Alkyl Bromides Catalyzed by 4‐Phenylpyridine
作者:Li Zhang、Zhong‐Qian Wu、Lei Jiao
DOI:10.1002/anie.201912564
日期:2020.1.27
Utilizing pyridine catalysis, we developed a visible-light-induced transition-metal-free radical borylation reaction of unactivated alkyl bromides that features a broad substrate scope and mild reaction conditions. Mechanistic studies revealed a novel nucleophilic substitution/photoinduced radical formation pathway, which could be utilized to trigger a variety of radical processes.