Description

2,2'-Bithiophene-5,5'-Diboronic Acid Bis(Pinacol) Ester is a high-value, multi-functional organoboron building block essential for advanced cross-coupling reactions. This compound matters because it enables the precise and efficient synthesis of complex conjugated oligomers and polymers, which are foundational to modern electronic materials. It is critically needed by R&D chemists and process engineers in the organic electronics, pharmaceutical, and agrochemical sectors for developing novel organic semiconductors, OLED materials, and bioactive molecules. Consistent quality and reliable supply are paramount for successful scale-up and commercial production.

Application

• Suzuki-Miyaura Cross-Coupling Reactions: A key monomer for constructing π-conjugated systems in organic semiconductors and electronic materials.
• Organic Light-Emitting Diodes (OLEDs): Used in the synthesis of emissive layer materials and host compounds for display and lighting technologies.
• Organic Photovoltaics (OPVs) & Perovskite Solar Cells: Serves as a precursor for hole-transporting materials (HTMs) and interfacial layers.
• Organic Field-Effect Transistors (OFETs): Building block for high-mobility p-type and ambipolar semiconductor polymers.
• Pharmaceutical Intermediates: Enables the synthesis of complex biaryl structures present in various drug candidates.
• Agrochemical Research: Used to create novel active ingredients with specific biological activity.
• Chemical Sensors: Precursor for fluorescent probes and sensing materials that detect specific analytes.
• Material Science Research: Fundamental reagent for developing new conjugated polymers with tailored optical and electronic properties.

Basic Information

Product Name	2,2'-Bithiophene-5,5'-Diboronic Acid Bis(Pinacol) Ester
CAS No.	239075-02-6
Molecular Formula	C24H32B2O4S2
Molecular Weight	462.06 g/mol
Synonyms	5,5'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene; 2,2'-Bithiophene-5,5'-diyldiboronic Acid Bis(pinacol) Ester; 5,5'-Diboronic Acid Pinacol Ester-2,2'-Bithiophene; 2,2'-Bithiophene-5,5'-bis(boronic Acid Pinacol Ester); (2,2'-Bithiophene-5,5'-diyl)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane); 5,5'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithienyl; 2,2'-Bithiophene-5,5'-diboronic Acid Pinacol Ester; BTBT Boronic Ester
EINECS	Contact for details

Quality Control

Our 2,2'-Bithiophene-5,5'-Diboronic Acid Bis(Pinacol) Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure high purity and batch-to-batch consistency suitable for demanding applications like OLED and pharmaceutical synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment and is 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). Due to its hygroscopic nature, the container must be kept tightly sealed under an inert atmosphere (argon or nitrogen) after opening to prevent moisture absorption and decomposition. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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