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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 915409Generated: October 30, 2026

Iodoethane → 2-ethyl-5-(4-trifluoromethyl-phenyl)-2H-pyrazole-3-carboxylic acid ethyl ester

https://huagongshe.com/reaction/915409

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIodoethaneHCID 6340—
ReactantPotassium HydroxideHCID 14797—
ReactantHCID 178468625HCID 178468625—
Product2-ethyl-5-(4-trifluoromethyl-phenyl)-2H-pyrazole-3-carboxylic acid ethyl esterHCID 66777818—

Reaction Steps

In analogy to the procedure described for example 2 a], 5-(4-trifluoromethyl-phenyl)-1H-pyrazole-3-carboxylic acid ethyl ester (PCT Int. Appl. (2003), WO 2004000785 A2) was reacted with ethyl iodide in the presence of potassium hydroxide to to give 2-ethyl-5-(4-trifluoromethyl-phenyl)-2H-pyrazole-3-carboxylic acid ethyl ester as colorless crystals.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07265149B2
Source datasetuspto-grants-2007_09
ORD IDord-6ecfd8dde30f44febddbb8cdbab2693a
Source noteuspto-grants-2007_09