Table 2. Preparation of Diaryl Ethers 13a–13s by Nucleophilic Addition Reactions^a.

^aReaction conditions: Nucleophile (8, 20a, and 21–23) (0.25 mmol), 2-(trimethylsilyl)aryl 4-chlorobenzenesulfonate (7a–7e) (0.375 mmol), CsF (0.75 mmol), Cs₂CO₃ (0.25 mmol), and 18-crown-6 ether (0.25 mmol) in PhCN (4 mL) were maintained under stirring at 80 °C for 24 h.

^bIsolated yield.

^c10 mmol scale.