Hydrochloric Acid → 7-Fluoro-2,3,4,9-tetrahydro-1H-beta-carboline

참여 물질

반응 단계

6-Fluorotryptamine hydrochloride (0.511 g, 2.38 mmol) was dissolved in water (9 ml). Glyoxylic acid monohydrate (0.241 g, 2.618 mmol) was added, followed by KOH (0.129 g, 2.31 mmol). The resultant solid was stirred at ambient temperature for one hour before concentrated HCl (0.6 ml) was added in one portion. The mixture was refluxed for 30 minutes, more concentrated hydrogen chloride (0.6 ml) was added and the mixture was again refluxed for 15 minutes. The mixture was cooled to room temperature and basified to pH12 using 5N sodium hydroxide. It was extracted with chloroform (4×75 ml), separated, dried over magnesium sulphate, filtered and concentrated in vacuo to yield an off-white solid.

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