Scheme 2.

Scope I: Coupling of various functionalized silylated aryldiazenes with hexafluorobenzene (2 a). All reactions were performed on a 0.30 mmol scale at room temperature. Yields are isolated yields after flash chromatography on silica gel. [a] CsF/18‐crown‐6 (1.0 : 1.2 molar ratio). [b] 10 equiv of C₆F₆ (2 a) used. [c] The reaction time was 3 h. [d] The reaction time was 1 h. [e] 20 equiv of C₆F₆ (2 a) used. R=Me, Et.