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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1084719Generated: November 3, 2026

Acetic Acid → HCID 19824931, compound

https://huagongshe.com/reaction/1084719

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AcidHCID 176—
ReactantAmmonium HydroxideHCID 14923—
Reactant2-(2-Aminophenyl)indoleHCID 735966—
ReactantPiperonylamineHCID 2723901—
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 numberUS05006531
Source datasetuspto-grants-1991_04
ORD IDord-38a04c50a9dd45f3b14cc05996632e6b
Source noteuspto-grants-1991_04