5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester

Base Information

• Chemical Name: 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester
• CAS No.: 125240-85-9
• Molecular Formula: C₁₄H₁₅Cl₂N₃O₂
• Molecular Weight: 328.198

Synonyms:5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester

Chemical Property of 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester

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Technology Process of 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester

There total 1 articles about 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester 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: 92.0%

ethyl 2-cyano-3-ethoxybut-2-enoate (35260-93-6,932750-29-3) + (2,4-dichlorobenzyl)hydrazine (51421-37-5) → 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester (125240-85-9)

Guidance literature:

DOI:10.1002/jhet.5570260319

Reference yield: 84.0%

5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester (125240-85-9) → 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid hydrazide (125240-87-1)

Guidance literature:

With hydrazine hydrate; In 2-methoxy-ethanol; for 48h; Heating;

DOI:10.1002/jhet.5570260319

Reference yield:

5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid ethyl ester (125240-85-9) → 5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one (125272-69-7)

Guidance literature:

Multi-step reaction with 2 steps

1: 84 percent / 99percent hydrazine hydrate / 2-methoxy-ethanol / 48 h / Heating

2: 66 percent / bis-(2-hydroxy-ethyl) ether / 24 h / 150 - 160 °C

With hydrazine hydrate; In 2-methoxy-ethanol; diethylene glycol;

DOI:10.1002/jhet.5570260319

upstream raw materials:

ethyl 2-cyano-3-ethoxybut-2-enoate

(2,4-dichlorobenzyl)hydrazine

Downstream raw materials:

5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1H-pyrazole-4-carboxylic acid hydrazide

5-Amino-1-(2,4-dichloro-benzyl)-3-methyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

1-(2,4-Dichloro-benzyl)-3-methyl-5-pyrrol-1-yl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

1-(2,4-Dichloro-benzyl)-3-methyl-5-{[1-(5-nitro-furan-2-yl)-meth-(E)-ylidene]-amino}-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

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