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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1820280Generated: October 31, 2026

Cyclopentanecarbonyl chloride → HCID 57889090, compound

https://huagongshe.com/reaction/1820280

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCyclopentanecarbonyl chlorideHCID 78284—
ReactantDiisopropylethylamineHCID 81531—
Reactant(R)-1-((S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl)-1-oxobutan-2-aminium chlorideHCID 86614930—
SolventTetrahydrofuranHCID 8028—
ProductHCID 57889090HCID 5788909052.3%

Reaction Steps

(R)-1-((S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl)-1-oxobutan-2-aminium chloride (52.4 mg, 0.14 mmol), cyclopentane carbonylchloride (20 mg, 0.17 mmol), THF (5 mL), and DIPEA (135 mg, 1.1 mmol) were stirred overnight at rt. The reaction was concentrated, and Example 627 was isolated as a white solid using preparative reverse-phase HPLC (30.75 mg, 52.3% yield), M+H=421.31.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07601844B2
Source datasetuspto-grants-2009_10
ORD IDord-a22b87f69e224318af19a360cd6c0819
Source noteuspto-grants-2009_10