N-Iodosuccinimide → 3-iodo-5-(4-(methylthio)phenoxy)-N,N-bis((2-(trimethylsilyl)ethoxy)methyl)pyrazolo[1,5-a]pyrimidin-7-amine

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Reaction Steps

5-(4-(methylthio)phenoxy)-N,N-bis((2-(trimethylsilyl)ethoxy)methyl)pyrazolo[1,5-a]pyrimidin-7-amine (490 mg, 0.81 m) 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, 3-iodo-5-(4-(methylthio)phenoxy)-N,N-bis((2-(trimethylsilyl)ethoxy)methyl)pyrazolo[1,5-a]pyrimidin-7-amine (541 mg) as yellowish oil. HPLC-MS tR=3.18 min (UV254 nm); mass calculated for formula C25H39IN4O3SSi2 658.1, observed LCMS m/z 659.2 (M+H).

Provenance & Evidence