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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1677684Generated: October 31, 2026

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

https://huagongshe.com/reaction/1677684

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 numberUS08008327B2
Source datasetuspto-grants-2011_08
ORD IDord-e41f226dbe4e4507ab63d5255e655d25
Source noteuspto-grants-2011_08