Pyrrolidine → 6-Fluoro-2,9-dihydro-9-methyl-2-phenyl-4-(1-pyrrolidinylcarbonyl)-1H-pyrido[3,4-b]indol-1-one

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Reaction Steps

A solution of 3.2 g (10 mmol) of 6-fluoro-9-methyl-1-oxo-2-phenyl-2,9-dihydro-1H-pyrido[3,4-b]indole-4-carboxylic acid and of 3.2 g (20 mmol) of N,N'-carbonyldiimidazole in 65 ml of N,N-dimethylformamide is stirred for 4 h at 60° C. 2.5 ml (30 zmol) of pyrrolidine are added at room temperature and the reaction mixture is stirred for 20 h.

Provenance & Evidence