Water → HCID 18183217, compound

Participants

Reaction Steps

120 mg of 9-bromo-8-methyl-5-phenyl-11H-1,3-dioxolo[4,5-h]imidazo[1,2-c][2,3]benzodiazepine is mixed in 15 ml of tetrahydrofuran at −78° C. with 0.36 ml of butyllithium (hexane, 1 mol) and stirred for 15 minutes. It is then mixed at this temperature with 0.6 ml of dimethylformamide and stirred for 15 minutes. After stirring to room temperature, it is mixed with water, the tetrahydrofuran is distilled off and extracted with ethyl acetate. After the solvent is distilled off, it is chromatographed on silica gel with dichloromethane:ethanol=95:5 as an eluant. 46 mg of 9-formyl-8-methyl-5-phenyl-11H-1,3-dioxolo[4,5-h]imidazo[1,2-c][2,3]benzodiazepine is obtained.

Provenance & Evidence