C–N Bond Activation of N,N′-Dialkylacylhydrazines Mediated by β-Fragmentation of Nitrogen-Centered Radical

Water-mediated decarboxylative radical nitrosation of β-keto acids with tert-butyl nitrite: access to α-oximino ketones

A practical catalyst-free decarboxylative radical nitrosation system of β-keto acids with tert-butyl nitrite in water has been described.

Three-Component Radical Iodonitrosylative Cyclization of 1,6-Enynes under Metal-Free Conditions

A three-component, metal-free radical cascade iodonitrosylative cyclization reaction was described. The nitroso radical was generated from tert-butyl nitrite and triggered the radical addition/cyclization/iodination/oxidation sequences. A variety of 1,6-enynes were tested and proved to be compatible, delivering various highly functionalized hetero- and all-carbon cycles and nitro and vinyl C-I bonds containing pyrrolidines, tetrahydrofuran, and cyclopentane in moderate to excellent isolated yields.

Selenium-catalyzed oxidation of alkenes: insight into the mechanisms and developing trend

Recent progresses of the selenium-catalyzed oxidation of alkenes are summarized at the mechanism level. It may be beneficial for designing novel selenium-containing catalysts and alkene oxidation protocols for the next phase of studies.