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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 521360Generated: October 31, 2026

Trifluoroacetic acid → HCID 131730105, compound

https://huagongshe.com/reaction/521360

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantHCID 67436865HCID 67436865—
SolventDichloromethaneHCID 6344—
ProductHCID 131730105HCID 13173010531%

Reaction Conditions

Temperature0 °C

Reaction Steps

tert-Butyl 4-(4-chlorophenyl)-4-(4-((5R,7R)-5-methyl-7-(4-nitrobenzoyloxy)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)phenyl)piperidine-1-carboxylate (36 mg, 0.069 mmol) was dissolved in DCM (3 mL) and cooled to 0° C. Then TFA (1.5 mL) was added dropwise. The resulting solution was stirred at 0° C. for 1 hour, concentrated under reduced pressure, dissolved in DMF (1 mL) and purified by reverse phase HPLC (0-100% AcCN/H2O) to give (5R,7R)-4-(4-(4-(4-chlorophenyl)piperidin-4-yl)phenyl)-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-ol di-TFA salt (9 mg, 31% yield). 1H NMR (DMSO-d6, 400 MHz) δ 9.09 (s, 1H), 7.88 (d, J=8.8 Hz, 2H), 7.52 (d, J=8.4 Hz, 2H), 7.42 (q, J=4.8 Hz, 4H), 5.64 (d, J=6.0 Hz, 1H), 5.06 (q, J=6.8 Hz, 1H), 3.85 (br s, 1H), 3.05 (br s, 3H), 2.89 (m, 2H), 2.61 (br s, 3H), 2.11 (m, 2H), 1.16 (t, J=6.4 Hz, 3H), 1.04 (d, J=6.6 Hz, 3H). LCMS: M+1 420.4.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09328091B2
Source datasetuspto-grants-2016_05
ORD IDord-92904c22179c4a0eb927e8e76d396649
Source noteuspto-grants-2016_05