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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 497144Generated: November 2, 2026

Phthalimide → HCID 22022171, compound

https://huagongshe.com/reaction/497144

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalimideHCID 6809—
ReactantHydrazine hydrate (1:1)HCID 24654—
SolventMethanolHCID 887—
SolventDichloromethaneHCID 6344—
ProductHCID 22022171HCID 2202217155%

Reaction Steps

To a suspension of 1.2 g (2.5 mmol) of phthalimide 4 in 100 ml of methanol was added 6 ml of hydrazine monohydrate. This was stirred at room temperature overnight upon which the suspension turned into a clear yellow solution. The mixture was concentrated and residue was diluted with water and extracted with chloroform. The organic solution was washed with brine and dried (MgSO4), and the residue was purified by column chromatography with silica eluting with 10% methanol in dichloromethane affording 0.48 g of the aminoethyl-pyridone 5 (55% yield). Step 3

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06949560B2
Source datasetuspto-grants-2005_09
ORD IDord-a9b81eb7f4004228ac8baf30901de350
Source noteuspto-grants-2005_09