Tri-tert-butyl borate
Synonym(s):Boron tert-butoxide;Tri-tert-butoxyborane
- CAS NO.：7397-43-5
- Empirical Formula: C12H27BO3
- Molecular Weight: 230.15
- MDL number: MFCD00009652
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:56:29
What is Tri-tert-butyl borate?
Chemical properties
CLEAR COLOURLESS LIQUID
The Uses of Tri-tert-butyl borate
Tri-tert-butyl borate can be used as:
- An additive in the synthesis of chiral α-hydroxy esters by reacting dimethylzinc with α-ketoesters using (?)-2-exo-morpholinoisobornane-10-thiol.
- A starting material in the synthesis of boronate of (+)-pinane-2,3-diol.
Synthesis Reference(s)
The Journal of Organic Chemistry, 43, p. 2731, 1978 DOI: 10.1021/jo00407a051
General Description
Tri-tert-butyl borate is an organoborate commonly used to prepare other borate esters. It is also used as a substrate in Rh-catalyzed carbonylation reactions.
Properties of Tri-tert-butyl borate
| Melting point: | 18-19 °C (lit.) |
| Boiling point: | 101 °C/74 mmHg (lit.) |
| Density | 0.811 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 85 °F |
| storage temp. | Flammables area |
| form | Liquid |
| color | Colorless |
| Specific Gravity | 0.811 |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
Safety information for Tri-tert-butyl borate
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H226:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for Tri-tert-butyl borate
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