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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 583281Generated: October 29, 2026

Hydrochloric Acid → HCID 21584331, compound

https://huagongshe.com/reaction/583281

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHCID 21584362HCID 21584362—
ReactantHCID 178418361HCID 178418361—
SolventMethanolHCID 887—
SolventWaterHCID 962—
ProductHCID 21584331HCID 21584331—

Reaction Steps

To 8-nitro-2,3,4,6,11,11a-hexahydro-1H-pyrazino[1,2-b]isoquinoline (2.98 g) in methanol (150 ml) and water (10 ml) was added concentrated hydrochloric acid (3.26 ml) and 5% Pd--C (300 mg). The mixture was treated with hydrogen at 50 psi on a Parr Hydrogenator. Hydrogen uptake was complete in 1.0 hour. The catalyst was filtered off and the solvent removed under reduced pressure to yield the title product as a solid (3.69 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05929085
Source datasetuspto-grants-1999_07
ORD IDord-0e6f928b3d074f89aa62b4d0abf6bf24
Source noteuspto-grants-1999_07