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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1453041Generated: October 30, 2026

tert-butyl N-[2-[3-[2-(2-cyclopentyl-4,6-dioxo-tetrahydropyran-2-yl)ethyl]phenyl]-2-methyl-propyl]carbamate → 6-{2-[3-(2-Amino-1,1-dimethyl-ethyl)-phenyl]-ethyl}-6-cyclopentyl-dihydro-pyran-2,4-dione trifluoroacetic acid salt

https://huagongshe.com/reaction/1453041

Reaction equation

Participants

RoleNameHCIDCharge
Reactanttert-butyl N-[2-[3-[2-(2-cyclopentyl-4,6-dioxo-tetrahydropyran-2-yl)ethyl]phenyl]-2-methyl-propyl]carbamateHCID 16728682—
ReactantTrifluoroacetic acid methylene chlorideHCID 21863450—
SolventTolueneHCID 1140—
Product6-{2-[3-(2-Amino-1,1-dimethyl-ethyl)-phenyl]-ethyl}-6-cyclopentyl-dihydro-pyran-2,4-dione trifluoroacetic acid saltHCID 68866329—

Reaction Steps

(2-{3-[2-(2-Cyclopentyl-4,6-dioxo-tetrahydro-pyran-2-yl)-ethyl]-phenyl}-2-methyl-propyl)-carbamic acid tert-butyl ester (1.80 g, 3.94 mmol), was stirred with 30% TFA/CH2Cl2 (30 mL), for 2 h. The reaction was diluted with Toluene (30 mL) and stripped of all solvents. The crude product was used without further purification. Yield 3.22 g.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07473790B2
Source datasetuspto-grants-2009_01
ORD IDord-b640ae589dcb4a2999dbfd970c26ca8b
Source noteuspto-grants-2009_01