反应详情

A solution of ethyl 4-(3-(((benzyloxy)carbonyl)amino)-2-methylphenyl)-7-bromo-3-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-1-carboxylate (4.68 g, 8.12 mmol) and 10% palladium on carbon (2.59 g, 2.44 mmol) in xylene (130 mL) was heated at 120° C. overnight. The reaction mixture was diluted with ethyl acetate and filtered through a pad of CELITE®. The CELITE® pad was washed well with ethyl acetate, and the filtrate was concentrated under reduced pressure. The residue was purified by flash silica gel chromatography using a mixture of ethyl acetate in hexane (20%-35%-50%) to give ethyl 4-(3-(((benzyloxy)carbonyl)amino)-2-methylphenyl)-7-bromo-3-methyl-9H-pyrido[3,4-b]indole-1-carboxylate (1.49 g, 2.60 mmol, 32% yield) as a burgundy solid. LC/MS M+1=572.2 and 574.2.

1. filtrationfiltered through a pad of CELITE®
2. washThe CELITE® pad was washed well with ethyl acetate
3. concentrationthe filtrate was concentrated under reduced pressure
4. customThe residue was purified by flash silica gel chromatography
5. additiona mixture of ethyl acetate in hexane (20%-35%-50%)