Reaktionsschritte
The general procedure described in Example 3 was used with 4-chloro-3,5-dimethyl-phenol (156 mg, 1.00 mmol), 4-phenoxathiineboronic acid (293 mg, 1.20 mmol), Pd(OAc)2 (2.2 mg, 0.010 mmol, 1 mol %), sodium 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl-3′-sulfonate (10.0 mg, 0.020 mmol, 2 mol %), K2CO3 (414 mg, 3.00 mmol), water (3.0 mL), 12 h, 100° C. The product was isolated as a colorless oil (277 mg, 85%), which became a white solid upon standing. Mp=116° C. 1H NMR (400 MHz, CDCl3) δ: 7.20 (m, 2H), 7.01-7.16 (m, 3H), 6.96 (d, 1H, J=7.6 Hz), 6.73 (m, 3H), 5.64 (s, 1H), 2.04 (s, 6H). 13C NMR (125 MHz, CDCl3) δ: 154.6, 152.6, 149.9, 138.3, 130.2, 129.9, 129.5, 127.8, 126.8, 126.1, 124.7, 124.6, 121.2, 121.1, 118.2, 114.2, 20.9. IR (neat, cm−1): 3367, 1593, 1471, 1419, 1311, 1265, 1223, 1154, 1026, 752. Anal. Calcd for C20H16O2S: C, 74.97; H, 5.03. Found: C, 74.88; H, 4.99.
