Trifluoroacetic acid → 2-[3-(2-Aminoethyl)-2-(3,5-dimethylphenyl)-1H-indol-5-yl]-1-(7-azabicyclo[2.2.1]hept-7-yl)-2-methyl-propan-1-one

Participants

Reaction Conditions

Reaction Steps

To a solution of {2-[5-[2-(7-azabicyclo[2.2.1]hept-7-yl)-1,1-dimethyl-2-oxo-ethyl]-2-(3,5-dimethylphenyl)-1H-indol-3-yl]ethyl} carbamic acid tert-butyl ester (728 mg in 30 mL methylene chloride) at 0° C. was added 1.5 mL anisole followed by 10.5 mL trifluoroacetic acid and the mixture stirred at 0° C. After 2 hours, the mixture was concentrated in vacuo and the residual acid quenched by the addition of 10% ammonium hydroxide in methanol. The concentrated was then purified by flash chromatography on silica gel (methylene chloride:10% ammonium hydroxide in methanol, 95:5; then 92:8) to give the title compound (627 mg).

Provenance & Evidence