Triethylamine → 8-chloro-5-(2-cyclohexylethyl)-2,3,4,5-tetrahydro-2-methyl-1H-pyrido[4,3-b]indole

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Reaction Steps

Preparation of the title compound was carried out according to General Method 8. 4-Chlorophenylhydrazine hydrochloride (1 g, 5.5 mmol), 1-bromo-2-cyclohexylethane (0.87 ml, 5.5 mmol), triethyl amine (2.31 ml, 16.6 mmol) and N-methyl-4-piperidone hydrochloride (810 mg, 5.5 mmol) were combined in ethanol (10 ml) to obtain 16 mg of 8-chloro-5-(2-cyclohexylethyl)-2,3,4,5-tetrahydro-2-methyl-1H-pyrido[4,3-b]indole after purification on silica gel (230-400 mesh) chromatography eluting with acetone-hexane gradient. The free base was converted into its oxalate salt by treatment of oxalic acid (1 equiv.) in anhydrous THF.

Provenance & Evidence