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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1983046Generated: November 1, 2026

Thionyl Chloride → 4-bromo-1-(chloromethyl)-3-(pentafluoroethyl)-1H-pyrazole

https://huagongshe.com/reaction/1983046

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant4-bromo-3-(pentafluoroethyl)-1H-pyrazole-1-ylmethanolHCID 23149133—
SolventDichloromethaneHCID 6344—
Product4-bromo-1-(chloromethyl)-3-(pentafluoroethyl)-1H-pyrazoleHCID 23149194—

Reaction Steps

6.49 g of 4-bromo-3-(pentafluoroethyl)-1H-pyrazole-1-ylmethanol was dissolved to 60 ml of dichloromethane. 3.2 ml of thionyl chloride was added to the solution, followed by stirring at room temperature for overnight. The reaction mixture was concentrated under reduced pressure to obtain 6.84 g of 4-bromo-1-(chloromethyl)-3-(pentafluoroethyl)-1H-pyrazole.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07541374B2
Source datasetuspto-grants-2009_06
ORD IDord-96d77e08646f48fbbae403a54c833d69
Source noteuspto-grants-2009_06