847818-74-0 1-Methyl-1H-pyrazole-5-boronic Acid Pinacol Ester

847818-74-0 1-Methyl-1H-pyrazole-5-boronic Acid Pinacol Ester

1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Basic information 1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Chemical Properties Safety Information 1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Usage And Synthesis 1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Preparation...
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Product Details

1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Basic information

Product Name:

1-Methyl-1H-pyrazole-5-boronic    acid pinacol ester

Synonyms:

1-METHYL-5-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-1H-PYRAZOLE;1-METHYL-1H-PYRAZOLE-5-BORONIC    ACID PINACOL ESTER;CBI-BB ZERO/005567;1-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole;1H-Pyrazole,1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-;1-Methyl-1H-pyrazole-5-boronic acid pinacol ester ,97%;1H-pyrazole, 1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxabo;1-Methyl-pyrazole-5-boronic acid pinacol ester

CAS:

847818-74-0

MF:

C10H17BN2O2

MW:

208.07

EINECS:

 

Product Categories:

Boronic ester;Organoborons;Pyrazole

Mol File:

847818-74-0.mol

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1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Chemical Properties

Water Solubility 

Slightly soluble in water.

Density:

1.06 g/cm3

Melting    Point:

58-61ºC

Boiling    Point:

355ºC at 760 mmHg

Flash    Point:

168.5ºC

Refractive Index:

1.505

CAS DataBase Reference

847818-74-0(CAS    DataBase Reference)


Safety Information

Hazard Codes 

Xn

Risk Statements 

22-36/37/38

Safety Statements 

26

HazardClass 

IRRITANT

Hs code

2934999090


1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Usage And Synthesis

Chemical Properties

White to light brown solid

Intermediate as

1258861-20-9 Taladegib (LY2940680)

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Synthesis route

image005_副本.jpg

Reference:

Journal of Heterocyclic Chemistry, , vol. 41,    # 6 p. 931 - 939

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Reference:

WO2009/158374 A2, ; Page/Page column 30 ; WO    2009/158374 A2
WO2007/120729 A2, ; Page/Page column 62-63 ; WO    2007/120729 A2

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Reference:

US2012/316166 A1, ; Page/Page column 71


1-Methyl-1H-pyrazole-5-boronic acid pinacol ester Preparation Products And Raw materials

Raw materials

Diethyl    ether-->Tetrahydrofuran-->Toluene-->n-Butyllithium-->Hexane-->Nitrogen-->Triisopropyl    borate-->Trimethyl    borate-->Pinacol-->MOLECULAR    SIEVE-->1-Methylpyrazole


Upstream information

2,3-dimethylbutane-2,3-diol; (1-Methyl-1H-Pyrazol-5-yl)-Boronic Acid; iodomethane; 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole; N-methylpyrazole; Triisopropyl Borate;


Downtream information

1-Methyl-1H-pyrazole-5-boronic acid pinacol ester; 1-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

 

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