Ethyl bromoacetate → Ethyl 2-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)acetate

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Reaction Steps

Preparation of the title compound was carried out according to General Method 1 by using 4-chlorophenylhydrazine hydrochloride (5 g, 27.9 mmol), ethyl bromoacetate (4.6 g, 27.9 mmol), triethylamine (11.6 mL, 83.2 mmol) and N-methyl-4-piperidone hydrochloride (5.2 g, 34.9 mmol) in ethanol (50 ml) to obtain 1.3 g of ethyl 2-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)acetate after purification on neutral alumina chromatography eluting with dichloromethane-hexane gradient.

Provenance & Evidence