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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 79511Generated: October 29, 2026

Trifluoroacetic acid → HCID 68760289, compound

https://huagongshe.com/reaction/79511

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantTetrafluoro-m-phenylenediamine dihydrochlorideHCID 149026—
Reactanttert-butyl 4-(5-bromo-1H-pyrrolo[2,3-b]pyridin-4-yl)piperazine-1-carboxylateHCID 68760498—
SolventDichloromethaneHCID 6344—
ProductHCID 68760289HCID 6876028994.9%

Reaction Steps

tert-Butyl 4-(5-bromo-1H-pyrrolo[2,3-b]pyri din-4-yl)piperazine-1-carboxylate (0.40 g, 1.05 mmol) was placed in DCM (3 mL) at room temperature. TFA (0.3 mL) was then added. The reaction was stirred at room temperature for 1 hour and concentrated to dryness. The resulting residue was dissolved in minimal DCM and added to a stirring solution of 1M HCl in ether. The resulting solid was collected by filtration, washed with ether, and dried to give 5-bromo-4-(piperazin-1-yl)-1H-pyrrolo[2,3-b]pyridine (0.28 g, 94.9% yield) as the dihydrochloride salt.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08841304B2
Source datasetuspto-grants-2014_09
ORD IDord-cb7081c9bff74ddc917b841ac0a59369
Source noteuspto-grants-2014_09