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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1487089Generated: October 31, 2026

Hydrochloric Acid → Gsk-2981278

https://huagongshe.com/reaction/1487089

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantAmmonium ChlorideHCID 25517—
ReactantLithium triethylborohydrideHCID 23712863—
ReactantHCID 89875911HCID 89875911—
SolventTetrahydrofuranHCID 8028—
ProductGsk-2981278HCID 8987598779.6%

Reaction Steps

A solution of Super-Hydride® (1 M in tetrahydrofuran, 0.449 mL, 0.449 mmol) was added over 5 minutes, to a solution of methyl 5-(N-(4-ethylphenyl)-N-isobutylsulfamoyl)-2-((tetrahydro-2H-pyran-4-yl)methoxy)benzoate (100 mg, 0.204 mmol) in tetrahydrofuran (THF) (2 mL) under nitrogen. The solution was stirred for 1 hour then was added to a 1:1 mixture of ammonium chloride solution and HCl (2 N, 10 mL). The mixture was extracted with tert-butyl methyl ether (TBME) (2×5 mL), then organics dried and evaporated. The residue was purified by silica (Si) chromatography (0-50% ethyl acetate-cyclohexane) to give the title compound as a white foam (75 mg). LCMS [LCMS1] Rt 1.28 min, m/z (ES+) 462 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09428452B2
Source datasetuspto-grants-2016_08
ORD IDord-badafb207efb4945b99776235ba544ba
Source noteuspto-grants-2016_08