Trifluoroacetic acid → 2-(8-Chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)-1-(piperidin-1-yl)ethanone

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl 2-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)acetate (200 mg) and piperidine (2 ml) was heated at 120° C. for 8 h to obtain 5 mg of 2-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)-1-(piperidin-1-yl)ethanone as TFA salt after purification on silica gel (230-400 mesh) chromatography eluting with methanol-dichloromethane gradient followed by reverse-phase chromatography (C-18, 500 mm×50 mm, Mobile Phase A=0.05% TFA in water, B=0.05% TFA in acetonitrile, Gradient: 10% B to 80% B in 30 min, injection vol. 5 mL).

Provenance & Evidence