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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 624305Generated: November 2, 2026

Hydrochloric Acid → HCID 78121192, compound

https://huagongshe.com/reaction/624305

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHCID 71582999HCID 71582999—
SolventDichloromethaneHCID 6344—
ProductHCID 78121192HCID 7812119258%

Reaction Steps

This was converted to the (2R,5S)-7-methyl-2-[4-[3-(trifluoromethoxy)phenyl]-2-pyridyl]-1,7-diazaspiro[4.4]-nonan-6-one hydrochloride (E1) by addition of HCl (1 M in diethyl ether) to a DCM solution of the free base. Evaporation followed by further drying under reduced pressure gave an amber solid. The latter was further dried under reduced pressure at 40° C. to give the title compound in 58% yield;

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09303032B2
Source datasetuspto-grants-2016_04
ORD IDord-780b55e364a34473980e8e6157a95800
Source noteuspto-grants-2016_04