Fig. 7: Substrate scope of para-azidation of N-arylhydroxylamines.
From: Metal-free para-selective C-H amination and azidation of N-arylhydroxylamines
Method C: 1 (0.20 mmol, 1.0 equiv.), FSIT (0.4 mmol, 2.0 equiv.), TMSN3 (0.60 mmol, 3.0 equiv.), K2CO3 (0.40 mmol, 2.0 equiv.) in 4 ml of MeCN/1,4-Dioxane (3/1) at −20 oC for 3 h. Yields were determined by the isolated products. FSIT fluorosulfuryl imidazolium triflate.
