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.
Miscible with ether, dichloromethane, tetrahydrofuran and organic solvents.
Air sensitive and moisture sensitive. Store in a cool place. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents, strong acids, water, bases and alcohols.
|42° to 43°C (50mmHg)|
Safety and Handling
GHS H Statement
Highly flammable liquid and vapor.
In contact with water releases flammable gas.
Causes serious eye irritation.
GHS P Statement
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Handle under inert gas.
Protect from moisture.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Store in a well-ventilated place. Keep cool.
Dispose of contents/container in accordance with local/regional/national/international regulations.
DOTInformation : Transport Hazard Class: 4.3; Packing Group: II; Proper Shipping Name: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE
Recommended Storage : 2° to 8°C