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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2078398Generated: November 2, 2026

Hydrochloric Acid → HCID 75231052, compound

https://huagongshe.com/reaction/2078398

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantLithium hydroxide, monohydrateHCID 168937—
ReactantHCID 75231051HCID 75231051—
SolventMethanolHCID 887—
ProductHCID 75231052HCID 7523105290.6%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of racemic (2′S, 3S, 4′R)-6-chloro-4′-[5-chloro-2-(1-methoxycarbonyl-1-methyl-ethoxy)-pyridin-3-yl]-2′-(5-fluoro-2-methyl-phenyl) spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (160 mg, 0.27 mmol), LiOH.H2O (250 mg, 5.94 mol), H2O (5 mL) and methanol (15 mL) was heated at 80° C. for 40 min. After cooled to room temperature, the solution was acidified to “pH” 1 by addition of 1N HCl solution. The aqueous layer was extracted with EtOAc. The organic layer was washed with water, brine, dried over anhydrous Na2SO4 and concentrated to give the title compound as a light yellow solid (140 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07928233B2
Source datasetuspto-grants-2011_04
ORD IDord-c80590c4f6954420915274a5cbec8920
Source noteuspto-grants-2011_04