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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 588586Generated: October 29, 2026

HCID 178474492, compound → 4-(2-phenylethynyl)-3-(trifluoromethyl)-1H-pyrazol-5-amine

https://huagongshe.com/reaction/588586

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 178474492HCID 178474492—
SolventEthanolHCID 702—
SolventSodium HydroxideHCID 14798—
Product4-(2-phenylethynyl)-3-(trifluoromethyl)-1H-pyrazol-5-amineHCID 17850912284.5%

Reaction Steps

A solution of N-[4-(2-phenylethynyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl]acetamide (900 mg, 3.07 mmol) in ethanol (12 mL) and 25% NaOH (9 mL) was heated to 70° C. for 1.5 h. The organic layer was separated and the aqueous extracted with EtOAc (×2). The combined organics were washed with water and the wash extracted with EtOAc. The combined organics were dried over MgSO4, filtered and evaporated, yielding the title compound as a red oil (652 mg) which was used in the subsequent step.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09227976B2
Source datasetuspto-grants-2016_01
ORD IDord-d8ced791ad7547849e679f345cd0ac77
Source noteuspto-grants-2016_01