反应详情

To a solution containing 5-hydroxy-6-iodonicotinate (3.70 g, 13.3 mmol;), 2-(3-thienyl)ethanol (1.90 mL, 17.2 mmol), and triphenylphosphine (4.52 g, 17.2 mmol;) in tetrahydrofuran (73.3 mL, 903 mmol;) was added Diisopropyl azodicarboxylate (3.39 mL, 17.2 mmol;) dropwise. The reaction mixture was stirred at RT o/n. The reaction mixture was concentrated and purified by flash chromatography EtOAc/Hex (0-100%) (eluted at 30%) to give methyl 6-iodo-5-(2-(thiophen-3-yl)ethoxy)nicotinate (93.2% yield). MS: (ESI+) 390.1

1. concentrationThe reaction mixture was concentrated
2. custompurified by flash chromatography EtOAc/Hex (0-100%) (eluted at 30%)