反应详情

Methyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yloxy)benzoate (450 mg, 0.81 mmol) was dissolved in ACN (15 mL) and NIS (200 mg, 0.88 mmol) was added. The resulting mixture was stirred at room temperature for 2 h and then the solvent was removed under reduced pressure. The residue was purified with column (silica gel, 10% EtOAc/Hexane) gave the product, methyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-iodopyrazolo[1,5-a]pyrimidin-5-yloxy)benzoate (541 mg) as yellowish oil. HPLC-MS tR=3.10 min (UV254 nm); mass calculated for formula C26H39IN4O5Si2 670.2, observed LCMS m/z 671.2 (M+H).

1. customthe solvent was removed under reduced pressure
2. customThe residue was purified with column (silica gel, 10% EtOAc/Hexane)