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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1186589Generated: October 31, 2026

Trifluoroacetic acid → HCID 68671068, compound

https://huagongshe.com/reaction/1186589

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantTetrahydro-4H-pyran-4-oneHCID 121599—
ReactantHCID 68671314HCID 68671314—
SolventDichloromethaneHCID 6344—
ProductHCID 68671068HCID 6867106888.5%

Reaction Steps

Tert-butyl 2-amino-4-{[(2S)-1-methylpyrrolidin-2-yl]methoxy}benzoate (400 mg, 1.3 mmol) was dissolved in 20 ml of DCM under argon atmosphere. Tetrahydro-4H-pyran-4-one (0.19 ml, 2.05 mmol), TFA (0.29 ml, 3.69 mmol) and Me4BH(OAc)3, (540 mg, 2.05 mmol) were added. The resulting slurry was stirred overnight at room temperature then quenched with 15 ml of NaHCO3 10% and extracted twice with 20 ml of DCM. The organic layers were then dried over Na2SO4, filtered off and concentrated to yield a yellow oil (448 mg, 1.15 mmol, 88%) which was used in the next step without any further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08673893B2
Source datasetuspto-grants-2014_03
ORD IDord-f059aa6e0b8c43fa91312b748f24bd6d
Source noteuspto-grants-2014_03