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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 20477Generated: October 30, 2026

Hydrochloric Acid → Butyric acid (2R,5R)-5-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-morpholin-2-ylmethyl ester hydrochloride

https://huagongshe.com/reaction/20477

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
Reactant(R)-5-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-2-butyryloxymethyl-morpholine-4-carboxylic acid tert-butyl esterHCID 68563008—
ProductButyric acid (2R,5R)-5-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-morpholin-2-ylmethyl ester hydrochlorideHCID 86615367100%

Reaction Steps

To (R)-5-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-2-butyryloxymethyl-morpholine-4-carboxylic acid tert-butyl ester (0.022 g, 0.043 mmol) add 4 M hydrogen chloride in 1,4-dioxane (0.500 mL, 2.00 mmol) and stir for 45 minutes. Concentrate under reduced pressure to give the title compound as an off-white solid (20.0 mg, 100%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07745438B2
Source datasetuspto-grants-2010_06
ORD IDord-ca97306d46fa47ff9d2685213146a619
Source noteuspto-grants-2010_06