Sodium Carbonate → HCID 22247014, compound

Participants

Reaction Steps

Tetrakis(triphenylphosphine)palladium(0) (91 mg, 0.08 mmol), Na2CO3 (0.87 mL, 1M) and 5-formyl-2-thiopheneboronic acid (247 mg, 1.58 mmol) were added to a solution of ethyl 7-{[4-iodobenzyl]-methanesulfonyl-amino}-heptanoate (371 mg, 0.79 mmol) in toluene (33 mL) and EtOH (6.5 mL). The reaction mixture was heated at reflux for 3 h. The solution was diluted with EtOAc and the organic solution was washed with water (2× followed by brine (1×). The organic solution was dried over MgSO4, filtered, and concentrated in vacuo. The product was purified via radial chromatography (25% EtOAc/hexanes to 50% EtOAc/hexanes) to afford the title compound of Step A (75 mg). 1H NMR (400 MHz, CDCl3) δ 9.89 (s, 1H), 7.44–7.60 (m, 5H), 7.21–7.31 (m, 1H), 4.45 (s, 2H), 4.10 (q, 2H), 3.20 (t, 2H), 2.90 (s, 3H), 2.25 (t, 3H), 1.58 (m, 4H), 1.35 (m, 7H); MS 452 (M+).

Provenance & Evidence