Description

Potassium Ethynyltrifluoroborate is a versatile organoboron reagent featuring a terminal alkyne group. This compound is valued for its stability and reactivity in cross-coupling reactions, particularly in the synthesis of complex organic molecules. It is a critical building block for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors seeking to introduce ethynyl groups with high selectivity and yield.

Application

• Suzuki-Miyaura Cross-Coupling Reactions: A key reagent for constructing carbon-carbon bonds, enabling the synthesis of conjugated systems and complex aryl alkynes.
• Pharmaceutical Intermediate Synthesis: Used in the development of active pharmaceutical ingredients (APIs) and drug candidates, particularly those requiring alkyne functional groups for further derivatization.
• Agrochemical Research & Development: Employed in creating novel herbicides, fungicides, and insecticides with tailored properties.
• Material Science & Polymer Chemistry: Serves as a monomer or building block for conductive polymers, metal-organic frameworks (MOFs), and other functional materials.
• Ligand Synthesis & Catalysis: Useful for preparing specialized ligands and catalysts used in homogeneous catalysis.
• Chemical Biology & Bioconjugation: Facilitates the labeling and modification of biomolecules via click chemistry and other bioorthogonal reactions.

Basic Information

Product Name	Potassium Ethynyltrifluoroborate
CAS No.	892869-21-5
Molecular Formula	C₂HBF₃K
Molecular Weight	135.93 g/mol
Synonyms	Potassium Ethynyltrifluoro Borate; Potassium (Ethynyl)trifluoroboronate; Ethynyltrifluoroborate Potassium Salt; Potassium Trifluoro(ethynyl)borate; Potassium Trifluoro(ethynyl)boron(1-); Potassium Ethynyl-trifluoroborane(1-); K-ETF; Potassium Acetylide Trifluoroborate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Each batch is analyzed to confirm identity, purity, and consistency. Certificates of Analysis (COA) are available upon request, providing detailed results from our analytical protocols, which may include NMR, HPLC, and elemental analysis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic nature, this material should be handled and stored under an inert atmosphere (e.g., nitrogen or argon) in a desiccator to prevent moisture absorption. Recommended long-term storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (NMR)	Conforms to structure
Purity (NMR / HPLC)	≥95%
Water Content (KF)	≤1.0%
Heavy Metals	≤20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.