1H-Indazole-3-carboxylicacid,4,5,6,7-tetrahydro-1-methyl-7-oxo-,ethylester(9CI)

Base Information

• Chemical Name: 1H-Indazole-3-carboxylicacid,4,5,6,7-tetrahydro-1-methyl-7-oxo-,ethylester(9CI)
• CAS No.: 802541-13-5
• Molecular Formula: C₁₁H₁₄N₂O₃
• Molecular Weight: 222.244
• Hs Code.: 2933990090
• Mol file: 802541-13-5.mol

Synonyms:1H-Indazole-3-carboxylicacid,4,5,6,7-tetrahydro-1-methyl-7-oxo-,ethylester(9CI)

Chemical Property of 1H-Indazole-3-carboxylicacid,4,5,6,7-tetrahydro-1-methyl-7-oxo-,ethylester(9CI)

Chemical Property:

• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.607
• Boiling Point: 405.353°C at 760 mmHg
• Flash Point: 198.95°C
• PSA: 61.19000
• Density: 1.327g/cm³
• LogP: 1.11580
• Storage Temp.: Sealed in dry,Room Temperature

Purity/Quality:

97% ^*data from raw suppliers

Ethyl1-methyl-7-oxo-4,5,6,7-tetrahydro-1h-indazole-3-carboxylate ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 1H-Indazole-3-carboxylicacid,4,5,6,7-tetrahydro-1-methyl-7-oxo-,ethylester(9CI)

There total 4 articles about 1H-Indazole-3-carboxylicacid,4,5,6,7-tetrahydro-1-methyl-7-oxo-,ethylester(9CI) 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: 68.0%

ethyl (3-ethoxy-2-oxocyclohex-3-en-1-yl)-(oxo)acetate (802541-12-4) + methylhydrazine (60-34-4) → ethyl 1-methyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylate (802541-13-5)

Guidance literature:

ethyl (3-ethoxy-2-oxocyclohex-3-en-1-yl)-(oxo)acetate; methylhydrazine; With acetic acid; at 20 ℃; for 6h;

With ammonia; water;

Reference yield: 60.2%

ethyl 2-(3-methoxy-2-oxocyclohex-3-en-1-yl)(oxo)acetate + methylhydrazine sulfuric acid (302-15-8) → ethyl 1-methyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylate (802541-13-5)

Guidance literature:

With acetic acid; at 20 ℃; for 2h;

Reference yield:

2-methoxycyclohex-2-en-1-one (23740-37-6) → ethyl 1-methyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylate (802541-13-5)

Guidance literature:

Multi-step reaction with 2 steps

1: lithium hexamethyldisilazane / tetrahydrofuran / 8 h / -50 - 20 °C / Inert atmosphere

2: acetic acid / 2 h / 20 °C

With acetic acid; lithium hexamethyldisilazane; In tetrahydrofuran;

upstream raw materials:

ethyl (3-ethoxy-2-oxocyclohex-3-en-1-yl)-(oxo)acetate

methylhydrazine

methylhydrazine sulfuric acid

2-methoxycyclohex-2-en-1-one

Downstream raw materials:

ethyl 1-methyl-8-(phenylamino)-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxylate

ethyl 8-amino-1-methyl-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxylate

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