Description

2,2'-(3-Bromo-4-Methylthiophene-2,5-Diyl)Bis(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane) is a high-purity, bifunctional boronic ester derivative, a critical building block in modern synthetic chemistry. Its value lies in its dual reactive sites, enabling efficient cross-coupling reactions to construct complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors, particularly for developing novel active ingredients and organic electronic materials. CAS No. 1256360-34-5.

Application

• Pharmaceutical Intermediate: A key precursor in Suzuki-Miyaura cross-coupling reactions for synthesizing novel drug candidates, especially those containing functionalized thiophene cores.
• Agrochemical Synthesis: Used to create advanced active ingredients for crop protection products by enabling the formation of complex biaryl structures.
• Organic Electronics: Serves as a monomer for constructing conjugated polymers and small molecules used in Organic Light-Emitting Diodes (OLEDs), Organic Photovoltaics (OPVs), and field-effect transistors (OFETs).
• Material Science Research: Employed in the development of novel organic semiconductors and liquid crystal materials due to its planar, electron-rich thiophene unit.
• Chemical Synthesis: A versatile reagent for constructing complex, polycyclic aromatic and heteroaromatic systems in academic and industrial R&D laboratories.
• Ligand & Catalyst Development: Used as a precursor for synthesizing specialized ligands and organometallic catalysts.

Basic Information

Product Name	2,2'-(3-Bromo-4-Methylthiophene-2,5-Diyl)Bis(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane)
CAS No.	1256360-34-5
Molecular Formula	C₂₁H₃₂BBrO₄S
Molecular Weight	471.26 g/mol
Synonyms	3-Bromo-4-methylthiophene-2,5-diylbis(boronic acid) bis(pinacol) ester; 2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-bromo-4-methylthiophene; 3-Bromo-4-methyl-2,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene; 3-Bromo-4-methylthiophene-2,5-diyldiboronic acid pinacol ester; 2,5-Diboronic acid pinacol ester-3-bromo-4-methylthiophene; Thiophene-2,5-diboronic acid derivative; Bifunctional thiophene boronic ester; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our 2,2'-(3-Bromo-4-Methylthiophene-2,5-Diyl)Bis(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure high chemical purity and structural integrity. Certificates of Analysis (COA) detailing lot-specific results are available upon request to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

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

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