Description

1,4-Diethynyl-2,5-Dipropoxybenzene is a high-purity organic building block featuring a central benzene ring symmetrically substituted with ethynyl and propoxy groups. This compound is valued for its rigid, linear molecular structure and terminal alkyne functionality, making it a critical precursor in advanced materials synthesis. It is primarily sought by researchers and manufacturers in the fields of organic electronics, polymer science, and pharmaceutical intermediates for constructing conjugated systems and complex molecular architectures.

Application

• Organic Semiconductor Precursor: Serves as a key monomer for synthesizing conjugated polymers and small molecules used in OLEDs, OFETs, and photovoltaic cells.
• Pharmaceutical Intermediate: Utilized in the research and development of novel active pharmaceutical ingredients (APIs), particularly those requiring rigid, aromatic backbones.
• Metal-Organic Framework (MOF) Linker: The ethynyl groups act as coordination sites or can be further functionalized to create porous materials for gas storage and catalysis.
• Click Chemistry Substrate: Ideal for Huisgen 1,3-dipolar cycloaddition (copper-catalyzed azide-alkyne cycloaddition) reactions to create complex dendrimers and polymers.
• Liquid Crystal & Nonlinear Optical Materials: Used in the synthesis of materials with specific optical properties due to its extended π-conjugation and molecular anisotropy.
• Cross-coupling Reactions: Acts as a versatile substrate in Sonogashira, Heck, and other palladium-catalyzed cross-coupling reactions for carbon-carbon bond formation.

Basic Information

Product Name	1,4-Diethynyl-2,5-Dipropoxybenzene
CAS No.	406721-43-5
Molecular Formula	C₁₆H₁₈O₂
Molecular Weight	242.31 g/mol
Synonyms	2,5-Dipropoxy-1,4-diethynylbenzene; 1,4-Bis(ethynyl)-2,5-dipropoxybenzene; p-Diethynyl-p'-dipropoxybenzene; Benzene, 1,4-diethynyl-2,5-dipropoxy-; 406721-43-5; 1,4-Diethynyl-2,5-bis(propoxy)benzene
EINECS	Contact for details

Quality Control

Our 1,4-Diethynyl-2,5-Dipropoxybenzene is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity assessment and NMR for structural confirmation, to ensure it meets the high standards required for research and production. A Certificate of Analysis (COA) detailing specific results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place at room temperature (15-25°C). Due to its sensitivity to oxidation, the container should be purged with inert gas after each opening 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	Contact for details
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.