Metal-Free Autoxidative Nitrooxylation of Alkenyl Oximes with Molecular Oxygen

A metal-free aerobic autoxidative nitrooxylation of alkenyl oximes mediated by tert-butyl nitrite is described. Molecular oxygen is used as the oxidizing reagent, avoiding use of organic trapping reagents such as 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO). The desired products were obtained in generally high yields.