Cesium fluoride → HCID 10408048, compound

Participants

Reaction Steps

A mixture of Example 1B (92 mg, 0.3 mmol), 2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (112 mg, 0.45 mmol), Pd(PCy3)2Cl2 (11 mg, 0.015 mmol), and CsF (144 mg, 0.9 mmol) in DME (20 mL) and methanol (10 mL) was heated to reflux for 16 hours, cooled to room temperature, and partitioned between ethyl acetate and water. The organic layer was washed with brine, dried (MgSO4), filtered, and concentrated under vacuum. The residue was purified by flash column chromatography on silica gel with 1:1 hexanes/ethyl acetate to provide 95 mg (81%) of the desired product. MS (DCI) m/e 391 (M+H)+; 1H NMR (500 MHz, DMSO-d6) δ 9.88 (s, 1H), 9.26 (s, 1H), 8.36 (s, 1H), 7.75 (d, J=8.1 Hz, 1H), 7.60 (d, J=2.2 Hz, 1H), 7.55 (dd, J=8.1, 1.9 Hz, 1H), 7.24 (d, J=2.1 Hz, 1H), 7.17-7.19 (m, 2H), 7.06-7.09 (m, 2H), 6.87 (d, J=8.1 Hz, 1H), 3.86 (s, 3H), 3.80 (s, 3H).

Provenance & Evidence