反应详情

A solution of phthalimide (294 mg, 2 mmol) and triphenylphosphine (525 mg, 2 mmol) in anhydrous methylene chloride (10 mL) was added via syringe to (±)-1-(6-bromopyridin-2-yl)-2-(7-methyl-2-((2-(trimethylsilyl)ethoxy)methyl)-2H-indazol-5-yl)ethanol (460 mg, 1 mmol). To the resulting suspension was then added diisopropylazidodicarboxylate (0.3 mL, 1.5 mmol) under nitrogen at room temperature via syringe. The resulting mixture was stirred at room temperature overnight (17 h). The mixture was diluted with hexane and purified by flash column chromatography to give a light yellow oil (700 mg, 100%). MS (ESI) [M+H]+=592. HPLC tR=2.05 min.

1. customat room temperature
2. custompurified by flash column chromatography