Trifluoroacetic acid → HCID 178446248, compound

Participants

Reaction Conditions

Reaction Steps

tert-butyl 2-methyl-2-(3-(3-(trifluoromethyl)-1-trityl-1H-pyrazolo[3,4-b]pyridin-4-yl)phenyl)butylcarbamate (148 mg, 0.2142 mmol) was dissolved in dry DCM (2 mL) and cooled in an ice-bath. triethylsilane (99.63 mg, 136.9 μL, 0.8568 mmol) was added followed slowly dropwise by TFA (2 mL,). The resulting mixture was stirred at 0° C. for ˜1 hour 50 minutes. The reaction mixture was concentrated under reduced pressure to give a light brown solid/gum. This material was partitioned with ether and brine. The ether layer was washed with 1M HCl (2×10 mL) and the combined aqueous layer was basified with saturated NaHCO3 and extracted with EtOAc (3×10 mL). The combined EtOAc was dried over Na2SO4, filtered and concentrated under reduced pressure to give a colourless gum (56.5 mg). This material was purified by column chromatography (4.5% MeOH/0.5% NH4OH in DCM, ˜75 mL silica, loaded in DCM) to give a white powder (15 mg, 20% Yield).

Provenance & Evidence