反应详情

A mixture of 2-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)acetic acid (125 mg, 0.45 mmol) and oxalyl chloride (2 ml) in dichloromethane (6.0 ml) was stirred at 25 deg C. for 3 h. The reaction mixture was concentrated to dryness. The resulting crude was dissolved in dichloromethane (6.0 ml) and DMAP (64 mg, 0.52 mmol) was added followed by addition of acetyl piperazine (56 mg, 0.43 mmol). The resulting mixture was stirred at 25 deg C. for 14 h. The solvent was removed in vacuo and purified 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) to obtain 20 mg of 1-(4-Acetyl-piperazin-1-yl)-2-(8-chloro-2-methyl-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-ethanone as trifluoroacetic acid salt.

1. concentrationThe reaction mixture was concentrated to dryness
2. dissolutionThe resulting crude was dissolved in dichloromethane (6.0 ml)
3. stirringThe resulting mixture was stirred at 25 deg C
4. waitfor 14 h
5. customThe solvent was removed in vacuo
6. custompurified 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)