Potassium Phosphate, Tribasic → HCID 67188006, compound

Participants

Reaction Steps

A stirred solution of Example 292 (0.048 g, 0.109 mmol), 2-bromobenzothiophene (0.035 g, 0.163 mmol), potassium phosphate (0.045 g, 0.212 mmol), tetra-n-butyl-ammonium bromide (0.045 g, 0.140 mmol) and tetrakis(triphenylphosphine)palladium(0) (0.008 g, 0.007 mmol) in THF (2 mL) and H2O (0.5 mL) was heated to 100° C. in a sealed vessel under a nitrogen atmosphere for 1 h. The reaction mixture was diluted with DCM (10 mL) and washed with water (10 mL) and brine (10 mL). The organic fraction was dried (MgSO4) and concentrated in vacuo. Purification by preparative HPLC (Method 6) gave the title compound (0.003 g, 7%) as a white solid. δH (CDCl3) 8.35 (1H, d, J 2.1 Hz), 7.88-7.73 (2H, m), 7.46 (1H, s), 7.41 (1H, dd, J 8.5 and 2.1 Hz), 7.37-7.28 (2H, m), 7.01 (1H, d, J 8.5 Hz), 5.27 (1H, s), 4.42-4.35 (2H, m), 4.23-4.17 (2H, m), 2.91 (2H, s), 1.42 (6H, s). LCMS (ES+) 448 (M+H)+, RT 4.37 minutes (Method 1).

Provenance & Evidence