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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 337774Generated: October 29, 2026

Trifluoroacetic acid → 4-{[(1S*,2R*)-2-(1-Ethyl-1H-pyrazol-5-yl)cyclopentyl]oxy}-2,5-difluoro-N-(pyrimidin-4-yl)benzenesulfonamide

https://huagongshe.com/reaction/337774

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantTriethylsilaneHCID 12052—
ReactantN-(2,4-Dimethoxybenzyl)-4-{[(1S*,2R*)-2-(1-ethyl-1H-pyrazol-5-yl)cyclopentyl]oxy}-2,5-difluoro-N-(pyrimidin-4-yl)benzenesulfonamideHCID 89963510—
SolventDichloromethaneHCID 6344—
Product4-{[(1S*,2R*)-2-(1-Ethyl-1H-pyrazol-5-yl)cyclopentyl]oxy}-2,5-difluoro-N-(pyrimidin-4-yl)benzenesulfonamideHCID 8996368572%

Reaction Steps

The reaction and aftertreatment were conducted in the same manner as in Example 1b by using the N-(2,4-dimethoxybenzyl)-4-{[(1S*,2R*)-2-(1-ethyl-1H-pyrazol-5-yl)cyclopentyl]oxy}-2,5-difluoro-N-(pyrimidin-4-yl)benzenesulfonamide (210 mg, 0.350 mmol) prepared in Example 37b, triethylsilane (0.20 mL), trifluoroacetic acid (2.0 mL) and dichloromethane (2.0 mL), to yield the title compound (113 mg, 72%) as a colorless solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08889741B2
Source datasetuspto-grants-2014_11
ORD IDord-5717a31f47d6491fa4a503c5e0a76d61
Source noteuspto-grants-2014_11