4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

Base Information

Chemical Name:4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one
CAS No.:109321-63-3
Molecular Formula:C₁₂H₁₃N₅O₄
Molecular Weight:291.266
Hs Code.:

Synonyms:4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

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Chemical Property of 4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

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Technology Process of 4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

There total 5 articles about 4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 95.0%

: 109321-58-6
2-(4-Ethoxy-2-nitro-phenylazo)-3-oxo-butyric acid ethyl ester

: 109321-63-3
4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

Guidance literature:: With hydrazine hydrate; In ethanol; Heating;

Reference yield:

: 616-86-4
2-nitro-4-ethoxyaniline

: 109321-63-3
4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

Guidance literature:: Multi-step reaction with 2 steps

1: 1) aq.NaNO₂, conc.HCl, 2) aq.NaOAc / 1) gl.HOAc, 0-5 deg C, 30 min, 2) EtOH, r.t., 1.5 h

2: 95 percent / hydrazine hydrate / ethanol / Heating

With hydrogenchloride; sodium acetate; hydrazine hydrate; sodium nitrite; In ethanol;

Reference yield:

: 131751-24-1
2-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-3-oxo-butyric acid ethyl ester

: 109321-63-3
4-[(4-Ethoxy-2-nitro-phenyl)-hydrazono]-5-methyl-2,4-dihydro-pyrazol-3-one

Guidance literature:: Multi-step reaction with 2 steps

1: 85 percent / ethanol / 4 h / Heating

2: 4percent alcoholic KOH / 1 h / Heating; or pyridine

With potassium hydroxide; In ethanol;