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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1027014Generated: October 28, 2026

4-(3,4-Difluorophenyl)piperidine hydrochloride → 6-[4-(3,4-Difluorophenyl)piperidine-1-carbonyl]-3-ethoxycarbonyl-7-(2-fluoro-5-methylphenylamino)pyrazolo[1,5-a]pyrimidine

https://huagongshe.com/reaction/1027014

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(3,4-Difluorophenyl)piperidine hydrochlorideHCID 46735549—
Reactant3-Ethoxycarbonyl-7-(2-fluoro-5-methylphenylamino)pyrazolo[1,5-a]pyrimidine-6-carboxylic acidHCID 67540774—
Product6-[4-(3,4-Difluorophenyl)piperidine-1-carbonyl]-3-ethoxycarbonyl-7-(2-fluoro-5-methylphenylamino)pyrazolo[1,5-a]pyrimidineHCID 6754117428%

Reaction Steps

In the same manner as in Example 21, step 5 and using 3-ethoxycarbonyl-7-(2-fluoro-5-methylphenylamino)pyrazolo[1,5-a]pyrimidine-6-carboxylic acid (150 mg, 0.42 mmol) obtained in step 2 and 4-(3,4-difluorophenyl)piperidine hydrochloride (WO2004/069798, 127 mg, 0.55 mmol), the title compound (63 mg, 28%) was obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08729264B2
Source datasetuspto-grants-2014_05
ORD IDord-7d64eb0cf858451da8b7e85086ea1377
Source noteuspto-grants-2014_05