Methyl iodide → HCID 67958463, compound

Participants

Reaction Steps

NaH in mineral oil (7.72 mg, 0.193 mmol) was added to a solution of (R)-tert-butyl 3-(6-((6-(tert-butoxycarbonyl)-6-azaspiro[2.5]octan-4-yl)oxy)pyrazin-2-yl)-5-(2-isopropoxy-2-oxoethyl)-1H-indazole-1-carboxylate (40 mg, 0.064 mmol) in THF (643 μl) at 0° C.; this was stirred for 15 min before iodomethane (12.04 μl, 0.193 mmol) was added. After 1 h at 0° C.; the mixture was warmed to RT and stirred for 1.5 h. The mixture was diluted with EtOAc (100 ml), added to a separatory funnel, and washed with saturated aqueous NH4Cl (2×75 ml) before the organic layer was separated, dried over Na2SO4, and concentrated. The crude was adsorbed onto silica and was purified via automated flash chromatography (silica gel) with 100% DCM to 4% MeOH/DCM to give (4R)-tert-butyl 4-((6-(5-(1-isopropoxy-1-oxopropan-2-yl)-1-methyl-1H-indazol-3-yl)pyrazin-2-yl)oxy)-6-azaspiro[2.5]octane-6-carboxylate (30 mg, 0.055 mmol, 85% yield) as a yellow oil. MS (ESI, pos. ion) m/z: 550.0 (M+1).

Provenance & Evidence