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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 736441Generated: October 29, 2026

Hydroxyamine hydrochloride → 5-(4-chlorophenyl)-3-(hydroxyamino)-8-methyl-7,9-dihydro-6H-pyrrolo[3,2-h]isoquinolin-2-one;hydrochloride

https://huagongshe.com/reaction/736441

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydroxyamine hydrochlorideHCID 443297—
Reactant8-methyl-5-(4-chlorophenyl)-6,7,8,9-tetrahydro-1H-pyrrolo[3,2-h]isoquinoline-2,3-dioneHCID 54325302—
SolventEthanolHCID 702—
Product5-(4-chlorophenyl)-3-(hydroxyamino)-8-methyl-7,9-dihydro-6H-pyrrolo[3,2-h]isoquinolin-2-one;hydrochlorideHCID 178480007—

Reaction Steps

A mixture of 5-(4-chlorophenyl)-8-methyl-6,7,8,9-tetrahydro-1-H-pyrrolo[3.2-h]isoquinoline-2,3-dione (0.50 g, 1.53 mmol), hydroxylamine hydrochloride (0.5 g, 7.2 mmol) and ethanol (5 ml, 96%) was stirred at room-temperature for 15 minutes. The colour shifted from yellow to red and the product precipitated. The product was filtered and 0.44 g (76%) was isolated. Mp decomp. 300-305° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07595336B2
Source datasetuspto-grants-2009_09
ORD IDord-2dbc1b03d6fa4ba1a19b83a71688d302
Source noteuspto-grants-2009_09