Pinacolborane Chemical Properties

Boiling point:

42-43 °C50 mm Hg(lit.)

Density 

0.882 g/mL at 25 °C(lit.)

vapor pressure 

29-119.9hPa at 20-50℃

refractive index 

n20/D 1.396(lit.)

Flash point:

41 °F

storage temp. 

2-8°C

solubility 

Miscible with ether, dichloromethane, tetrahydrofuran and organic solvents.

form 

Liquid

Specific Gravity

0.882

color 

Clear colorless to light yellow

Sensitive 

Air Sensitive

BRN 

7802871

Stability:

Air Sensitive, Hygroscopic, Moisture Sensitive

CAS DataBase Reference

25015-63-8(CAS DataBase Reference)

Safety Information

Hazard Codes 

F,Xi,Xn

Risk Statements 

11-15-36/37/38-36/37-19-40

Safety Statements 

16-43-8-37/39-26-33-29-36/37

RIDADR 

UN 3398 4.3/PG 2

WGK Germany 

3

Hazard Note 

Highly Flammable/Keep Cold/Air Sensitive

HazardClass 

4.3

PackingGroup 

II

HS Code 

29209090

MSDS

• Language:English Provider:Pinacolborane
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Pinacolborane Usage And Synthesis

Chemical Properties

Clear colorless liquid

Uses

Pinacolborane is used as a precursor of boronic esters by hydroboration or coupling reactions. It acts as a monofunctional hydroborating agent. It is used in the synthesis of unsymmetrical biaryls through aromatic C-H borylation-cross-coupling sequence. It is involved in the preparation of 4,4,5,5-tetramethyl-2-thiophen-2-yl-[1,3,2]dioxaborolane by reacting with 2-iodo-thiophene. Further, it is used to prepare vinylboronates by palladium-catalyzed coupling with alkenyl triflates and iodides.

Uses

Pinacolborane is used for synthesis of unsymmetrical biaryls via aromatic C-H borylation-cross-coupling sequence.

Pinacolborane(25015-63-8)Related Product Information

• Bis(pinacolato)diboron
• 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• Diborane
• METHYLCYCLOPENTADIENE DIMER
• 1,3-Dioxolane
• 1,4-Dioxane
• Borane-tetrahydrofuran complex
• Methoxydiethylborane
• Methyl cyclopentenolone
• Pentaborane
• 3-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PHENOL
• 4'-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)ACETANILIDE
• METHYL 4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)BENZOATE
• Allylboronic acid pinacol ester
• (2-BROMOMETHYLPHENYL)BORONIC ACID, PINACOL ESTER
• 4-Aminophenylboronic acid pinacol ester
• 4-Carboxylphenylboronic acid pinacol ester
• 2-Furanboronic acid pinacol ester