ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate

Base Information

• Chemical Name: ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate
• CAS No.: 81437-83-4
• Molecular Formula: C₁₆H₁₇N₅O₃
• Molecular Weight: 327.343

Synonyms:ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate

Chemical Property of ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate

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Technology Process of ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate

There total 2 articles about ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate 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: 94.8%

4-amino-2,3-dimethyl-1-phenylpyrazolin-5-one (83-07-8) + ethyl 2-cyanoacetate (105-56-6) → ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate (81437-83-4)

Guidance literature:

4-amino-2,3-dimethyl-1-phenylpyrazolin-5-one; With hydrogenchloride; sodium nitrite; In water; at 0 - 5 ℃;

ethyl 2-cyanoacetate; With sodium acetate; In ethanol; water; for 0.5h; Cooling;

DOI:10.1002/jhet.4076

Reference yield: 66.0%

4-amino-1-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (61341-50-2) + ethyl 2-cyanoacetate (105-56-6) → ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate (81437-83-4)

Guidance literature:

With hydrogenchloride; sodium acetate; sodium nitrite; In ethanol; for 2h; Ambient temperature;

Reference yield: 85.0%

ethyl 2-cyano-2-(2-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-yl)hydrazono)acetate (81437-83-4) → 4-{N'-[3-Amino-5-hydroxy-pyrazol-(4E)-ylidene]-hydrazino}-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one (82315-73-9)

Guidance literature:

With hydrazine hydrate; In ethanol; for 3h; Heating;

upstream raw materials:

4-amino-1-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

ethyl 2-cyanoacetate

4-amino-2,3-dimethyl-1-phenylpyrazolin-5-one

Downstream raw materials:

4-{N'-[3-Amino-5-hydroxy-pyrazol-(4E)-ylidene]-hydrazino}-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one

7-Imino-1,7a-dimethyl-3-oxo-2-phenyl-2,3,7,7a-tetrahydro-1H-pyrazolo[4,3-c]pyridazine-6-carboxylic acid ethyl ester

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