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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 505125Generated: October 31, 2026

Trifluoroacetic acid → Piperidine, 4-[2-(trifluoromethoxy)phenyl]-

https://huagongshe.com/reaction/505125

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant1-Benzyl-4-(2-trifluoromethoxy-phenyl)-1,2,3,6-tetrahydro-pyridineHCID 66743983—
CatalystPalladiumHCID 23938—
SolventEthanolHCID 702—
ProductPiperidine, 4-[2-(trifluoromethoxy)phenyl]-HCID 58808055—

Reaction Conditions

Temperature50 °C

Reaction Steps

To a solution of 1-benzyl-4-(2-trifluoromethoxy-phenyl)-1,2,3,6-tetrahydro-pyridine (described herein below) in EtOH was added (0.2 wt %) 10% Pd/C, followed by (5 eq.) TFA in a sealed tube. The reaction mixture was stirred at 50° C. under 3.0 bar of H2 for 12 h. The reaction mixture was filtered over Celite and the filtrate evaporated down to dryness. Redissolution in EtOAc, washing with 1N NaHCO3 and concentration gave the crude product which was directly used for the next step.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07781436B2
Source datasetuspto-grants-2010_08
ORD IDord-5033171b8a434624a81d20981058fa8b
Source noteuspto-grants-2010_08