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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2382938Generated: November 1, 2026

Dimethylformamide → 1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid chloride

https://huagongshe.com/reaction/2382938

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantOxalyl chlorideHCID 65578—
Reactant1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acidHCID 58138774—
SolventDichloromethaneHCID 6344—
Product1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid chlorideHCID 58138874—

Reaction Steps

To a solution of 1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid (0.400 g, 1.56 mmol) in CH2Cl2 (5 mL) at room temperature was added oxalyl chloride (0.86 mL, 1.7 mmol) followed by DMF (20 μL). Gas evolution was observed. After 30 minutes, the solution was concentrated in vacuo to afford 1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid chloride which was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08263597B2
Source datasetuspto-grants-2012_09
ORD IDord-6c8abf9b1eaa4ef1bdae335d11c32f71
Source noteuspto-grants-2012_09