[1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid pinacol ester

Base Information

• Chemical Name: [1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid pinacol ester
• CAS No.: 1082503-77-2
• Molecular Formula: C₁₃H₂₃BN₂O₃
• Molecular Weight: 266.148
• Hs Code.: 2933199090
• Mol file: 1082503-77-2.mol

Synonyms:[1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid pinacol ester;2-Methyl-1-(4-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol;2-methyl-1-[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]propan-2-ol;[1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid;1-(2-Hydroxy-2-methylprop-1-yl)-1H-pyrazole-4-boronicacid,pinacolester

Chemical Property of [1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid pinacol ester

Chemical Property:

• Boiling Point: 393.3±22.0 °C(Predicted)
• PKA: 14.61±0.29(Predicted)
• PSA: 56.51000
• Density: 1.07±0.1 g/cm3(Predicted)
• LogP: 0.95320
• Storage Temp.: Inert atmosphere,Store in freezer, under -20°C

Purity/Quality:

99%, ^*data from raw suppliers

2-Methyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of [1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid pinacol ester

There total 2 articles about [1-(2-Hydroxy-2-Methyl-propyl)pyrazol-4-yl]boronic acid pinacol 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: 94.0%

pyrazole-4-boronic acid pinacol ester (269410-08-4) + 3-chloro-2-methylpropan-2-ol (558-42-9) → 2-methyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol (1082503-77-2)

Guidance literature:

With caesium carbonate; In N,N-dimethyl-formamide; at 160 ℃; for 2.5h; Microwave irradiation;

Reference yield: 90.0%

2-methyl-1,2-epoxypropane (558-30-5) + pyrazole-4-boronic acid pinacol ester (269410-08-4) → 2-methyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol (1082503-77-2)

Guidance literature:

With caesium carbonate; at 120 ℃; for 0.5h; Microwave irradiation;

Reference yield:

2,3-difluoro-4-bromophenol (144292-32-0) + 2-methyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol (1082503-77-2) → 3,5-difluoro-4-[1-(2-hydroxy-2-methylpropyl)-1H-pyrazol-4-yl]phenol (1613300-97-2)

Guidance literature:

With tris-(dibenzylideneacetone)dipalladium⁽⁰⁾; 2,6-di-tert-butyl-4-methyl-phenol; potassium carbonate; tricyclohexylphosphine; In 1,4-dioxane; water; at 100 ℃; for 1h; Microwave irradiation; Inert atmosphere;

upstream raw materials:

2-methyl-1,2-epoxypropane

pyrazole-4-boronic acid pinacol ester

3-chloro-2-methylpropan-2-ol

Downstream raw materials:

3,5-difluoro-4-(1-(2-hydroxy-2-methylpropyl)-1H-pyrazol-4-yl)phenyl trifluoromethanesulfonate

1-{4-[2,6-difluoro-4-(4,4,5,5-tetramethyl-[1,3,2]-dioxaborolan-2-yl)phenyl]pyrazol-1-yl}-2-methylpropan-2-ol

3,5-difluoro-4-[1-(2-hydroxy-2-methylpropyl)-1H-pyrazol-4-yl]phenol

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