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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2078399Generated: November 4, 2026

Hydrochloric Acid → HCID 75231082, compound

https://huagongshe.com/reaction/2078399

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantLithium hydroxide, monohydrateHCID 168937—
ReactantHCID 75231054HCID 75231054—
SolventMethanolHCID 887—
ProductHCID 75231082HCID 75231082102.9%

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-chloro-2-methyl-phenyl) spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (200 mg, 0.33 mmol), LiOH.H2O (280 mg, 6.6 mmol), 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 (200 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07928233B2
Source datasetuspto-grants-2011_04
ORD IDord-90de5e77d5a340dba115c4db9ca7e830
Source noteuspto-grants-2011_04