4-Bromophenylboronic acid N-butyldiethanolamine ester
4-Bromophenylboronic acid N-butyldiethanolamine ester (CAS 1257642-68-4) is an organoboron compound with the molecular formula C14H21BBrNO2 and a molecular weight of 326.04 g/mol. It serves as a valuable building block in organic synthesis, particularly in the formation of carbon-carbon bonds through cross-coupling reactions. Its utility extends to the development of complex organic molecules, pharmaceutical intermediates, and advanced materials.
- IUPAC
- 6-Butyl-2-(4-bromophenyl)-1,3,6,2-dioxazaborocane
- Synonyms
- 6-Butyl-2-(4-bromophenyl)-1,3,6,2-dioxazaborocane

Organic Synthesis
This compound acts as a versatile reagent in Suzuki-Miyaura cross-coupling reactions, enabling the efficient synthesis of biaryl compounds and other complex organic structures.
Pharmaceutical Intermediates
It is employed in the multi-step synthesis pathways for active pharmaceutical ingredients (APIs), contributing to the development of novel therapeutics.
Materials Science
The unique structure of this boronate ester makes it a potential precursor for the creation of advanced organic materials with tailored electronic or optical properties.
| Molecular weight | 326.04 |
|---|---|
| Empirical formula | C14H21BBrNO2 |
| Assay | 97% |
| Melting point | 120-124 °C |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25 |
| Safety statements (S) | 45 |
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 4-Bromophenylboronic acid N-butyldiethanolamine ester used for?
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This compound is primarily used in organic synthesis, particularly for cross-coupling reactions, and as an intermediate in the development of pharmaceuticals and advanced materials.
What is the CAS number and formula for 4-Bromophenylboronic acid N-butyldiethanolamine ester?
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The CAS number is 1257642-68-4 and the empirical formula is C14H21BBrNO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromophenylboronic acid N-butyldiethanolamine ester with a purity of 97%. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling this chemical?
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This compound is classified as Danger (GHS06) and is toxic if swallowed (H301). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and P2 respirator cartridges, is essential. Handle with extreme care in a well-ventilated area.
How is this chemical shipped and exported?
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This chemical is shipped and exported under UN 2811, Hazard Class 6.1, Packing Group III. Tech Serve Solutions adheres to all international shipping and export regulations.
How can I request a sample or quote for this product?
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To request a sample or a quote, please contact our sales department via the website or by phone, providing your details and the product CAS number (1257642-68-4).
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