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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 727769Generated: October 30, 2026

Ammonium Hydroxide → HCID 19824931, compound

https://huagongshe.com/reaction/727769

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium HydroxideHCID 14923—
Reactant4-PiperidoneHCID 33721—
Reactant2-(2-Aminophenyl)indoleHCID 735966—
ReactantHydrate;hydrochlorideHCID 21885828—
SolventAcetic AcidHCID 176—
SolventEthanolHCID 702—
ProductHCID 19824931HCID 1982493153.6%

Reaction Steps

To a mixture prepared from 8 g of 2-(2-aminophenyl)indole, 2.5 ml of acetic acid and 100 ml of ethanol was added 6.5 g of 4-piperidone.H2O.HCl. The mixture was refluxed for 6 hours and thereafter cooled to room temperature. The resultant mixture was treated with dilute NH4OH and the resultant solid was collected, washed with water and dried. The crude product (9.15 g) was flash chromatographed using CH3OH as an eluent, and thereafter converted to the HCl salt. This salt was converted back to the free base using CH2Cl2 /dilute NH4OH to give 5.96 g of solid, m.p. 257°-259° dec.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05045539
Source datasetuspto-grants-1991_09
ORD IDord-f71d7b18440e407488a06e47edb76310
Source noteuspto-grants-1991_09