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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1266960Generated: October 26, 2026

Triethylamine → 4-(4-Diazo-3-methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid

https://huagongshe.com/reaction/1266960

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactantp-Toluenesulfonyl azideHCID 13661—
Reactant4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acidHCID 109029—
SolventMethanolHCID 887—
Product4-(4-Diazo-3-methyl-5-oxo-2-pyrazolin-1-yl)benzoic acidHCID 135502619—

Reaction Steps

A solution of 4-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid (5.0 g, 0.023 mol) and p-toluenesulfonylazide (5.03 g, 0.026 mol) in methanol (30.0 mL) was treated with triethylamine (5.2 g; 0.051 mol.) and the reaction was stirred at room temperature for 5 hours.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06552008B1
Source datasetuspto-grants-2003_04
ORD IDord-e4ac385ef28a413c8cc30c3437ac2ecb
Source noteuspto-grants-2003_04