Description

2,2'-Dibromo-4,4'-Di-tert-Butylbiphenyl is a high-purity, halogenated biphenyl derivative serving as a critical advanced intermediate in organic synthesis. Its value lies in its unique molecular structure, which provides a sterically hindered, brominated aromatic core ideal for facilitating challenging coupling reactions and constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require reliable, high-quality building blocks for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds requiring a sterically hindered biphenyl scaffold.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators.
• Ligand and Catalyst Development: Serves as a foundational structure for creating specialized phosphine or N-heterocyclic carbene (NHC) ligands used in transition metal catalysis.
• Material Science Research: Employed in the development of organic semiconductors, liquid crystals, and polymers where the dibromo groups enable further functionalization via cross-coupling.
• Organic Synthesis Building Block: Utilized in Suzuki, Heck, and other palladium-catalyzed cross-coupling reactions to introduce the di-tert-butylbiphenyl moiety into target molecules.
• Flame Retardant Research: Investigated as a potential intermediate or additive in the development of novel flame-retardant materials due to its brominated aromatic structure.

Basic Information

Item	Details
Product Name	2,2'-Dibromo-4,4'-Di-tert-Butylbiphenyl
CAS No.	70728-93-7
Molecular Formula	C20H24Br2
Molecular Weight	432.21 g/mol
Synonyms	4,4'-Di-tert-butyl-2,2'-dibromobiphenyl; 2,2'-Dibromo-4,4'-bis(1,1-dimethylethyl)-1,1'-biphenyl; 2,2'-Dibromo-4,4'-bis(tert-butyl)biphenyl; 4,4'-Di-tert-butyl-2,2'-dibromo-1,1'-biphenyl; 2,2'-Dibrom-4,4'-di-tert-butylbiphenyl; Biphenyl, 2,2'-dibromo-4,4'-bis(1,1-dimethylethyl)-; DBDBB (abbreviation)
EINECS	Contact for details

Quality Control

Our 2,2'-Dibromo-4,4'-Di-tert-Butylbiphenyl is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic identification (NMR, IR), to ensure it meets exacting specifications for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

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). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in opaque packaging or amber glass.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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