Cesium carbonate → HCID 59354806, compound

Participants

Reaction Steps

A solution of 4-bromo-5-(4-chlorophenyl)-2,2-dimethylfuran-3(2H)-one (1.0 g, 3.30 mmol), 2-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)quinoline (1.30 g, 3.60 mmol), and Cs2CO3 (5.37 g, 16.50 mmol) in toluene (10 mL) and water (5 mL) was degassed. Then, Pd(dppf)C2 (0.54 g, 0.601 mmol) was added under an inert atmosphere and the solution was degassed again. The reaction mixture was then refluxed for 2 h, filtered through a pad of Celite®, and the filtrate was diluted with EtOAc (40 mL). The combined organic layers were washed with water (20 mL) and brine (20 mL), dried over Na2SO4, filtered, and concentrated in vacuo to obtain the crude product. The crude material was purified via silica gel column chromatography to afford 5-(4-chlorophenyl)-2,2-dimethyl-4-(4-(quinolin-2-ylmethoxy)phenyl) furan-3(2H)-one (520 mg, 35%) as a pale yellow solid. 1H NMR (500 MHz, d6-DMSO): δ 8.44 (d, J=8.5 Hz, 1H), 8.02 (t, J=7.9 Hz, 2H), 7.81 (t, J=8.4 Hz, 1H), 7.70 (d, J=8.2 Hz, 1H), 7.63 (t, J=8.2 Hz, 1H), 7.58 (d, J=8.5 Hz, 2H), 7.52 (d, J=8.5 Hz, 2H), 7.18 (d, J=7.4 Hz, 2H), 7.11 (d, J=7.5 Hz, 2H), 5.39 (s, 2H), 1.44 (s, 6H). MS: [M+Na]: m/z=478.1, [M+H]: m/z=456.1. HPLC: 97%, Column: Acquity BEH-C-18, 50×2.1 mm, 1.7 um. Mobile Phase: 0.025% TFA in Water (A), AcN (B), Flow rate: 0.5 ml/min (Gradient).

Provenance & Evidence