Description

4,4,5,5-Tetramethyl-2-(4-Phenylethynyl)[1,3,2]Dioxaborolane is a high-purity organoboron reagent featuring a phenylethynyl substituent, making it a valuable synthetic intermediate. This compound is essential for facilitating key carbon-carbon bond-forming reactions, particularly in the synthesis of complex organic molecules and advanced materials. It is primarily sought after by researchers and manufacturers in the pharmaceutical, agrochemical, and materials science industries for applications in cross-coupling chemistry and polymer synthesis.

Application

• Suzuki-Miyaura Cross-Coupling Reactions: A key reagent for constructing biaryl and conjugated systems in pharmaceutical and material science research.
• Pharmaceutical Intermediate Synthesis: Used in the development of active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Development: Employed in the synthesis of novel herbicides, fungicides, and insecticides.
• Organic Light-Emitting Diodes (OLEDs): Serves as a building block for electron-transport materials and emissive layer components.
• Polymer and Material Science: Used to incorporate boron and aromatic acetylene units into polymers for specialty materials.
• Ligand and Catalyst Development: Acts as a precursor for novel ligands in transition metal catalysis.
• Chemical Research and Development: A versatile tool for academic and industrial R&D in synthetic organic chemistry.

Basic Information

Product Name	4,4,5,5-Tetramethyl-2-(4-Phenylethynyl)[1,3,2]Dioxaborolane
CAS No.	1190376-20-5
Molecular Formula	C16H21BO2
Molecular Weight	256.15 g/mol
Synonyms	2-(4-Phenylethynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 4-Phenylethynylbenzeneboronic acid pinacol ester; (4-Ethynylphenyl)boronic acid pinacol ester; 4-Ethynylbenzeneboronic acid pinacol ester; 4-((4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)ethynyl)benzene; Pinacol (4-ethynylphenyl)boronate
EINECS	Contact for details

Quality Control

Our 4,4,5,5-Tetramethyl-2-(4-Phenylethynyl)[1,3,2]Dioxaborolane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including NMR and HPLC to confirm identity and assay. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) for long-term storage and to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥97.0%
Water Content (KF)	≤0.5%

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