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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 591250Generated: October 31, 2026

4-Amino-2-fluorobenzotrifluoride → 2-(1,1-difluoroethyl)-N-[3-fluoro-4-(trifluoromethyl)phenyl]-5-methyl[1,2,4]triazolo[1,5-a]pyrimidin-7-amine

https://huagongshe.com/reaction/591250

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Amino-2-fluorobenzotrifluorideHCID 2735914—
Reactant7-Chloro-2-(1,1-difluoroethyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidineHCID 53391869—
SolventEthanolHCID 702—
Product2-(1,1-difluoroethyl)-N-[3-fluoro-4-(trifluoromethyl)phenyl]-5-methyl[1,2,4]triazolo[1,5-a]pyrimidin-7-amineHCID 51347544—

Reaction Conditions

Temperature50 °C

Reaction Steps

A suspension of Intermediate 3 (0.1 g, 0.43 mmol) and 3-fluoro-4-(trifluoromethyl)aniline (ALFAAESAR, 0.077 g, 0.43 mmol) in ethanol (5 mL) was heated at 50° C. for 1 h. The reaction mixture was concentrated under vacuum, redissolved in DCM (20 mL) and washed with aq. Na2CO3 (2×15 mL). The organic layer was dried over anhydrous Na2SO4 filtered and concentrated under vacuum to afford a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09238653B2
Source datasetuspto-grants-2016_01
ORD IDord-61e402e36509418788d37515fa7c7991
Source noteuspto-grants-2016_01