Metal-free α -CH animation of ethers with hypervalent sulfonylimino-λ~3-bromane that acts as an active nitrenoid

摘要

Hypervalent Ν-triflylimino-λ~3-bromane undergoes direct and regioselective α-C-H animation of ethers at room temperature under transition metal-free conditions. Kinetic results, substituent and deuterium isotope effects suggest an asynchronous concerted organo-nitrenoid transition state with some hydride transfer character, analogous to that for alkane C-H insertions.