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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1395451Generated: October 30, 2026

Potassium Iodide → HCID 20339424, compound

https://huagongshe.com/reaction/1395451

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium IodideHCID 4875—
ReactantPotassium CarbonateHCID 11430—
Reactant2,3,4,4a-Tetrahydro-1H-pyrazino(1,2a)quinoxalin-5-(6H)oneHCID 156362—
Reactant4-(3-Chloropropyl)pyridineHCID 205442—
SolventAcetoneHCID 180—
SolventTriethylamineHCID 8471—
ProductHCID 20339424HCID 20339424—

Reaction Steps

A solution of 6.1 g. (0.03 mole) of 2,3,4,4a-tetrahydro-1H-pyrazino[1,2-a]quinoxalin-5(6H)-one, 6.3 g. (0.04 mole) of 3-(4-pyridyl)-1-chloropropane, 10 g. of potassium carbonate, 5 g. of potassium iodide and 0.5 ml. of triethylamine was stirred and refluxed in 200 ml. of acetone for 48 hours, then cooled and filtered. The solvent was removed, and the residue was dissolved in ethanol-ether and treated with dry hydrogen chloride saturated ether. The product hyrochloride was filtered and recrystallized two times from methanol. Dried at 100° C./0.1 mm. Yield: 6.2 g. (44%) as the dihydrochloride salt, m.p. 188°-190° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04203987
Source datasetuspto-grants-1980_05
ORD IDord-81e4b6e868f94e8593a3eee1649ee259
Source noteuspto-grants-1980_05