Efficient <i>N</i>‐Nitrosation of Sulfonamides with <i>tert</i>‐Butyl Nitrite at Room Temperature

Abstract Sulfonamide is one of the most important structures in organic chemistry due to its presence in natural products and pharmaceuticals. Herein, we disclose a simple, highly efficient, and direct one‐step synthesis of N ‐nitroso sulfonamides in excellent yields within 30 minutes employing sulfonamides and tert ‐butyl nitrite at room temperature in open air. This method could be used effectively to produce a variety of value‐added N ‐nitroso sulfonamides.