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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 617022Generated: October 26, 2026

beta-Aminobeta-ethoxyacrylic acid ethyl ester → 3-Amino-1-(4-nitrobenzyl)-pyrazol-5-one

https://huagongshe.com/reaction/617022

Reaction equation

Participants

RoleNameHCIDCharge
Reactantbeta-Aminobeta-ethoxyacrylic acid ethyl esterHCID 278451—
Reactant((4-Nitrophenyl)methyl)hydrazineHCID 18623426—
Product3-Amino-1-(4-nitrobenzyl)-pyrazol-5-oneHCID 20367183—

Reaction Steps

17.5 g of β-amino-β-ethoxyacrylic acid ethyl ester and 16.7 g of 4-nitrobenzylhydrazine, analogously to the procedure described in Example 1 yield 17.3 g of the compound identified above as yellowish crystals of melting point 182°, corresponding to 74% of theory.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04076943
Source datasetuspto-grants-1978_02
ORD IDord-8ac5e15b13a247c8914dc78c68749b2e
Source noteuspto-grants-1978_02