I2/O2-Enabled N-S Bond Formation to Access Functionalized 1,2,3-Thiadiazoles
Wei Fan1, Qun Li1, Yanrong Li1
1Institute of Chemistry & BioMedical Sciences, Nanjing University , Nanjing 210093, P. R. China.
Abstract:
A new, metal-free intermolecular formal [3 + 2] heterocyclization between triethylammonium thiolates and aryl hydrazines has been established by using the combination of I2 and O2 as efficient oxidation sources, allowing a concise and low-cost access to new densely functionalized 1,2,3-thiadiazoles with good to excellent yields. The reaction showed a broad scope of substrates of both reactants and attractive characteristics consisting of eco-friendly oxidants, flexible structural modification, broad functional group compatibility, and mild reaction conditions.
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