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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2237564Generated: October 31, 2026

4-Chlorobenzoic Acid → [3-(4-Chloro-benzoylamino)-pyrazol-1-yl]-acetic acid ethyl ester

https://huagongshe.com/reaction/2237564

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Chlorobenzoic AcidHCID 6318—
Reactantethyl 2-(3-amino-1H-pyrazol-1-yl)acetateHCID 5200378—
SolventTetrahydrofuranHCID 8028—
Product[3-(4-Chloro-benzoylamino)-pyrazol-1-yl]-acetic acid ethyl esterHCID 59698863—

Reaction Steps

59.1 Using general method A, with THF instead of DMF as solvent, (3-amino-pyrazol-1-yl)-acetic acid ethyl ester (example 57.1) was coupled with 4-chlorobenzoic acid to give [3-(4-chloro-benzoylamino)-pyrazol-1-yl]-acetic acid ethyl ester. Off-white solid. MS 308.3 ([M+H]+)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07718659B2
Source datasetuspto-grants-2010_05
ORD IDord-377fb7a4f833451abdbf7f55e421d47a
Source noteuspto-grants-2010_05