Description

Bis(3-Bromophenyl)Acetylene is a high-purity organic building block featuring a central acetylene unit symmetrically substituted with two 3-bromophenyl groups. This compound is valued for its role as a versatile intermediate in advanced organic synthesis, particularly in cross-coupling reactions. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science industries developing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of complex molecules for drug discovery and development, particularly for candidates targeting CNS disorders and oncology.
• Agrochemical Synthesis: Used in creating novel pesticides and herbicides, where the bromine atoms and acetylene linkage enable further functionalization.
• Material Science & OLED Development: Serves as a building block for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs) and other electronic materials.
• Ligand & Catalyst Preparation: Employed in the preparation of specialized ligands for transition metal catalysis, enhancing reaction selectivity and efficiency.
• Academic & Industrial R&D: A critical reagent for methodological studies in organic chemistry, including Sonogashira and other palladium-catalyzed cross-coupling reactions.

Basic Information

Product Name	Bis(3-Bromophenyl)Acetylene
CAS No.	91790-32-8
Molecular Formula	C14H8Br2
Molecular Weight	336.02 g/mol
Synonyms	1,1'-(1,2-Ethynediyl)bis[3-bromobenzene]; 3,3'-Dibromodiphenylacetylene; 1,3-Dibromo-5-(phenylethynyl)benzene (isomer); Bis(3-bromophenyl)ethyne; 3-Bromophenylacetylene dimer; m,m'-Dibromodiphenylacetylene
EINECS	Contact for details

Quality Control

Our Bis(3-Bromophenyl)Acetylene is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with customer specifications and industry standards for research and production use.

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. For long-term storage, consider storing under an inert atmosphere such as nitrogen or argon to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	125 - 130 °C
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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