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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1983026Generated: November 3, 2026

Thionyl Chloride → methyl 1-(chloromethyl)-1H-pyrazole-4-carboxylate

https://huagongshe.com/reaction/1983026

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactantmethyl 1-(hydroxymethyl)-1H-pyrazole-4-carboxylateHCID 23149172—
SolventDichloromethaneHCID 6344—
Productmethyl 1-(chloromethyl)-1H-pyrazole-4-carboxylateHCID 7017727—

Reaction Steps

1.38 g of 1-(hydroxymethyl)-4-methoxycarbonyl-1H-pyrazole was dissolved to 10 ml of dichloromethane. 1 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 1.59 g of 1-(chloromethyl)-4-methoxycarbonyl-1H-pyrazole.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07541374B2
Source datasetuspto-grants-2009_06
ORD IDord-65e58aff5c4a475398d6318ae059338a
Source noteuspto-grants-2009_06