Description
Potassium (but-3-en-1-yl)(trifluoro)borate(1-) is a high-purity organoboron compound with the molecular formula C4H7BF3K, designed for advanced research and synthetic applications. This reagent, also known as Potassium 3-Butenyltrifluoroborate, is a versatile building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, due to its stability and reactivity under mild conditions. With a CAS number of 608140-67-6, it is supplied as a white to off-white crystalline powder, ensuring consistent performance in catalysis, pharmaceuticals, and materials science. Each batch undergoes rigorous QC testing, including NMR and HPLC analysis, to guarantee >90% purity (or as specified). Store in a cool, dry place under inert conditions to maintain stability.
Properties
- CAS Number: 608140-67-6
- Complexity: 80.4
- IUPAC Name: potassium;but-3-enyl(trifluoro)boranuide
- InChI: InChI=1S/C4H7BF3.K/c1-2-3-4-5(6,7)8;/h2H,1,3-4H2;/q-1;+1
- InChI Key: UPXWGXKSNOQOKH-UHFFFAOYSA-N
- Exact Mass: 162.0229964
- Molecular Formula: C4H7BF3K
- Molecular Weight: 162.01
- SMILES: [B-](CCC=C)(F)(F)F.[K+]
- Monoisotopic Mass: 162.0229964
- Synonyms: 608140-67-6, DTXSID90635421, Potassium (but-3-en-1-yl)(trifluoro)borate(1-), DTXCID00586172, POTASSIUM BUT-3-ENYLTRIFLUOROBORATE, Potassium 3-Butenyltrifluoroborate, Potassium (3-butenyl)trifluoroborate, Potassium but-3-en-1-yltrifluoroborate, potassium;but-3-enyl(trifluoro)boranuide, MFCD11052817, Potassium3-Butenyltrifluoroborate, SCHEMBL16149055, Potassium homoallyltrifluoroborate, Potassiumbut-3-enyltrifluoroborate, UPXWGXKSNOQOKH-UHFFFAOYSA-N, AKOS006308662, AS-83093, SY058365, Potassium (3-butenyl)trifluoroborate, 90%, CS-0106377, potassium (but-3-en-1-yl)trifluoroboranuide, H12031, EN300-1251674
Potassium (but-3-en-1-yl)(trifluoro)borate(1-) is widely used in palladium-catalyzed cross-coupling reactions to introduce but-3-enyl groups into complex molecules. It serves as a key intermediate in pharmaceutical synthesis, agrochemical development, and polymer chemistry. Its air-stable nature and solubility in polar solvents like water or THF make it ideal for scalable industrial applications.
Safety and Hazards
GHS Hazard Statements
- H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
- H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
- H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Precautionary Statements
- P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Hazard Classes and Categories
- Skin Irrit. 2 (100%)
- Eye Irrit. 2A (100%)
- STOT SE 3 (100%)
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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.


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