Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 643857Generated: October 31, 2026

Pyrazole → HCID 55238268, compound

https://huagongshe.com/reaction/643857

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyrazoleHCID 1048—
Reactant4-Fluoro-3-nitrobenzotrifluorideHCID 67778—
ReactantDiisopropylethylamineHCID 81531—
SolventEthanolHCID 702—
ProductHCID 55238268HCID 5523826881%

Reaction Conditions

Temperature120 °C

Reaction Steps

1-Fluoro-2-nitro-4-trifluoromethyl-benzene (209 mg, 1 mmol) was dissolved in EtOH (4.5 mL) in a 5 mL microwave reaction vessel. 1H-pyrazole (83.5 mg, 1.2 mmol), DIPEA (329 μL, 2 mmol) and a stirrbar was added followed by sealing of the reaction vessel. The reaction mixture was then heated in the microwave for 30 min at 120° C. The reaction was concentrated in vacuo and the residue purified by flash chromatography (Silica, Hexane: EtOAc) to afford the title compound (206 mg, 81%). LC/MS>95%, m/z (ESI+)=258 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07700552B2
Source datasetuspto-grants-2010_04
ORD IDord-8713ce33ecf84db6bf4099e6d924de35
Source noteuspto-grants-2010_04