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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 509697Generated: October 29, 2026

Triethylamine → Dorastine

https://huagongshe.com/reaction/509697

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantHydrazine, (4-chlorophenyl)-, hydrochloride (1:1)HCID 71600—
Reactant1-Methylpiperidin-4-one hydrochlorideHCID 12210057—
Reactant5-(2-Bromoethyl)-2-methylpyridineHCID 53305856—
SolventEthanolHCID 702—
ProductDorastineHCID 305302.3%

Reaction Steps

Preparation of the title compound was carried out according to General Method 8. 4-Chlorophenylhydrazine hydrochloride (9 g, 50 mmol), 5-(2-bromoethyl)-2-methylpyridine (10 g, 50 mmol), triethyl amine (21 ml, 150 mmol) and N-methyl-4-piperidone hydrochloride (7.5 g, 50 mmol) were taken in ethanol (100 ml) to obtain 390 mg of 8-chloro-2,3,4,5-tetrahydro-2-methyl-5-(2-(6-methylpyridin-3-yl)ethyl)-1H-pyrido[4,3-b]indole after on purification on silica gel (230-400 mesh) chromatography eluting with methanol-dichloromethane gradient followed by reverse-phase chromatography (C-18, 500 mm×50 mm, Mobile Phase A=0.05% TFA in water, B=0.05% TFA in acetonitrile, Gradient: 10% B to 80% B in 30 min, injection vol. 5 mL).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09096591B2
Source datasetuspto-grants-2015_08
ORD IDord-47fe7ce608a94627ad9499650f6aa2cb
Source noteuspto-grants-2015_08