Tri-tert-butyl borate
Tri-tert-butyl borate (CAS 7397-43-5) is an organoborate compound with the chemical formula [(CH3)3CO]3B and a molecular weight of 230.15 g/mol. This liquid compound, assaying at 98%, serves as a valuable reagent in chemical synthesis, particularly in reactions involving organometallic chemistry and the formation of boronic acid derivatives. Its properties make it a useful building block for complex organic molecules.
- IUPAC
- Boron tert-butoxide,Tri-tert-butoxyborane
- Synonyms
- Boron tert-butoxideTri-tert-butoxyborane
![Tri-tert-butyl borate ([(CH3)3CO]3B) — chemical structure, CAS 7397-43-5; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F7397-43-5.png&w=3840&q=75)
Organometallic Reagent
Tri-tert-butyl borate functions as an organometallic reagent, facilitating carbon-carbon bond formation and other transformations in organic synthesis. It is employed in various coupling reactions and as a precursor to other boron-containing compounds.
Boronic Acid Precursor
This compound is a key intermediate in the synthesis of boronic acids and their derivatives. These boron compounds are widely used in Suzuki-Miyaura cross-coupling reactions, a cornerstone of modern organic chemistry for constructing complex molecular architectures.
Chemical Synthesis Building Block
Utilised as a versatile building block, tri-tert-butyl borate enables the introduction of boron functionalities into organic molecules. Its reactivity profile allows for controlled derivatisation, contributing to the synthesis of pharmaceuticals, agrochemicals, and advanced materials.
| Molecular weight | 230.15 |
|---|---|
| Linear formula | [(CH3)3CO]3B |
| Assay | 98% |
| Form | liquid |
| Boiling point | 101 °C/74 mmHg(lit.) |
| Density | 0.811 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.389(lit.) |
| Melting point | 18-19 °C(lit.) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 29 °C / 84.2 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
| Safety statements (S) | 16-33 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Tri-tert-butyl borate used for?
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Tri-tert-butyl borate is used as an organometallic reagent and a building block in chemical synthesis, particularly for the preparation of boronic acid derivatives employed in cross-coupling reactions.
What is the CAS number and chemical formula for Tri-tert-butyl borate?
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The CAS number for Tri-tert-butyl borate is 7397-43-5, and its chemical formula is [(CH3)3CO]3B.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tri-tert-butyl borate with a purity of 98%. This product is supplied for research and laboratory use and TSS does not represent it as USP, BP, EP, or other pharmacopoeial grade.
What are the primary safety hazards associated with Tri-tert-butyl borate?
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Tri-tert-butyl borate is a flammable liquid (H226). It requires careful handling in well-ventilated areas, away from ignition sources. Appropriate personal protective equipment, including eyeshields and gloves, should be worn.
How is Tri-tert-butyl borate shipped and exported?
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Tri-tert-butyl borate is shipped as a flammable liquid, UN 1993, Class 3, Packing Group III, in compliance with international regulations for hazardous materials transport. TSS is an experienced global exporter.
How can I request a sample or quote for Tri-tert-butyl borate?
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To request a sample or quote, please contact our sales department via the website or direct email, providing your specific requirements and delivery location.
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