2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylic acid

Base Information

• Chemical Name: 2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylic acid
• CAS No.: 933694-89-4
• Molecular Formula: C₇H₈N₂O₃
• Molecular Weight: 168.152
• Hs Code.: 2934999090
• Mol file: 933694-89-4.mol

Synonyms:2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylic acid

Chemical Property of 2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylic acid

Chemical Property:

• Boiling Point: 493.8±45.0 °C(Predicted)
• PKA: 15.30±0.20(Predicted)
• Density: 1.509±0.06 g/cm3(Predicted)

Purity/Quality:

99% ^*data from raw suppliers

2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylicacid ＞97% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
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MSDS Files:

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Technology Process of 2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylic acid

There total 3 articles about 2,4,6,7-Tetrahydro-pyrano[4,3-c]pyrazole-3-carboxylic acid 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:

Tetrahydro-4H-pyran-4-one (29943-42-8,143562-54-3) → 2,4,6,7-tetrahydropyrano[4,3-c]pyrazole-3-carboxylic acid (933694-89-4)

Guidance literature:

Multi-step reaction with 3 steps

1: ethanol

2: H₂NNH₂

3: Alkaline hydrolysis

With hydrazine; In ethanol;

DOI:10.1016/j.bmcl.2007.06.028

Reference yield:

ethyl 2-oxo-2-(4-oxotetrahydro-2H-pyran-3-yl)acetate (857177-01-6) → 2,4,6,7-tetrahydropyrano[4,3-c]pyrazole-3-carboxylic acid (933694-89-4)

Guidance literature:

Multi-step reaction with 2 steps

1: H₂NNH₂

2: Alkaline hydrolysis

With hydrazine;

DOI:10.1016/j.bmcl.2007.06.028

Reference yield:

C9H12N2O3 (518990-21-1) → 2,4,6,7-tetrahydropyrano[4,3-c]pyrazole-3-carboxylic acid (933694-89-4)

Guidance literature:

Alkaline hydrolysis;

DOI:10.1016/j.bmcl.2007.06.028

upstream raw materials:

C₉H₁₂N₂O₃

Tetrahydro-4H-pyran-4-one

ethyl 2-oxo-2-(4-oxotetrahydro-2H-pyran-3-yl)acetate

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