236608

Tri-tert-butyl borate

98%

• Synonym(s): Boron tert-butoxide, Tri-tert-butoxyborane
• Linear Formula: [(CH₃)₃CO]₃B
• CAS Number: 7397-43-5
• Molecular Weight: 230.15
• MDL number: MFCD00009652
• UNSPSC Code: 12352103
• PubChem Substance ID: 24854180
• NACRES: NA.22

Properties

• Assay: 98%
• form: liquid
• refractive index: n20/D 1.389 (lit.)
• bp: 101 °C/74 mmHg (lit.)
• mp: 18-19 °C (lit.)
• density: 0.811 g/mL at 25 °C (lit.)
• SMILES string: CC(C)(C)OB(OC(C)(C)C)OC(C)(C)C
• InChI: 1S/C12H27BO3/c1-10(2,3)14-13(15-11(4,5)6)16-12(7,8)9/h1-9H3
• InChI key: ZMCWFMOZBTXGKI-UHFFFAOYSA-N

Description

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.

Application

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.

Safety Information

• Pictograms: GHS02
• Signal Word: Warning
• Hazard Statements: H226
• Hazard Classifications: Flam. Liq. 3
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 84.2 °F - closed cup
• Flash Point(C): 29 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves