Hydrochloric Acid → 4-[1-(1-methyl-2-oxo-2-piperazin-1-ylethyl)-1H-pyrazol-4-yl]-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine

Participants

Reaction Steps

To a mixture of tert-butyl 4-{2-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanoyl}piperazine-1-carboxylate (3.14 g, 5.65 mmol) in methylene chloride (20 mL) was added 4.0 M of hydrogen chloride in 1,4-dioxane (7.06 mL, 28.2 mmol). The reaction mixture was stirred at RT for 1 h, then evaporated to dryness under reduced pressure. The residue was diluted with EtOAc and washed with 1 N NaOH, brine, dried over magnesium sulfate, and concentrated to dryness under reduced pressure to give the desired product (2.57 g, 99.8%). LCMS calculated for C22H34N7O2Si (M+H)+: m/z=456.3; Found: 456.2.

Provenance & Evidence