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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 524962Generated: October 30, 2026

Trifluoroacetic acid → HCID 86721019, compound

https://huagongshe.com/reaction/524962

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantDichloromethane methanolHCID 21226129—
ReactantHCID 86721017HCID 86721017—
SolventDichloromethaneHCID 6344—
ProductHCID 86721019HCID 86721019100.5%

Reaction Steps

TFA (0.75 mL, 9.735 mmol) was added to a solution of tert-butyl N-[4-(1-methyl-2-oxo-4-piperidyl)-3-pyridyl]carbamate (74 mg, 0.2423 mmol) in DCM (2 mL) and was stirred at ambient temperature for 2 hours. The reaction mixture was adsorbed onto a pre-wetted (methanol/DCM (1:1), 2 mL) SCX-2 cartridge (2 g) and flushed with DCM/methanol (1:1, 20 mL) and then the basic components eluted with 2 M ammonia in methanol (20 mL). The basic eluent was evaporated to dryness to afford 4-(3-aminopyridin-4-yl)-1-methylpiperidin-2-one as a pale yellow oil (50 mg, 97%). MS (ES+) 206.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09340546B2
Source datasetuspto-grants-2016_05
ORD IDord-f0b3bd14248b49ffa26c370103064a8f
Source noteuspto-grants-2016_05