1,3-Dioxane → 6-(Benzylthio)-1-(2-methoxy-4-(trifluoromethyl)phenyl)isoquinoline

Participants

Reaction Steps

A round-bottom flask was charged with 6-(benzylthio)-1-chloroisoquinoline (3.101 g, 10.85 mmol)-(2-methoxy-4-(trifluoromethyl)phenyl)boronic acid (2.86 g, 13.02 mmol), Pd(AmPhos)2Cl2 (0.384 g, 0.543 mmol), potassium phosphate (6.91 g, 32.6 mmol), 1,3-dioxane (27.1 ml), and water (9.04 ml). The vial was flushed with Ar (g), fitted with a reflux condenser, and placed in a 100° C. heating bath for 45 min. The mixture was cooled to room temperature, then diluted with water and extracted with EtOAc (2×). The combined organic extracts were dried over sodium sulfate, filtered, and concentrated. The crude product was purified by chromatography on silica gel (120-g, 10 to 40% EtOAc/Heptane) to give 6-(benzylthio)-1-(2-methoxy-4-(trifluoromethyl)phenyl)isoquinoline (4.47 g, 10.51 mmol, 97% yield) as a light-yellow solid: 1H NMR (400 MHz, CHLOROFORM-d) δ ppm=8.58 (d, J=5.8 Hz, 1H), 7.66 (d, J=1.8 Hz, 1H), 7.56-7.47 (m, 3H), 7.45-7.26 (m, 8H), 4.31 (s, 2H), 3.76 (s, 3H); m/z (ESI) 426.2 (M+H)+.

Provenance & Evidence