Description

1,3-Bis[(Trimethylsilyl)ethynyl]benzene is a specialized organosilicon building block featuring two trimethylsilyl-protected ethynyl groups on a benzene core. This compound is valued for its role as a key precursor in advanced materials science and pharmaceutical synthesis, enabling the construction of complex molecular architectures. It is primarily needed by R&D chemists and process engineers in the fields of organic electronics, polymer chemistry, and medicinal chemistry for creating novel conjugated systems and functional molecules.

Application

• Advanced Material Synthesis: A crucial monomer for the preparation of conjugated polymers and organic semiconductors used in OLEDs, OFETs, and photovoltaic cells.
• Pharmaceutical Intermediates: Serves as a protected alkyne synthon in the multi-step synthesis of complex drug candidates and bioactive molecules.
• Ligand and Catalyst Development: Used to create novel ligands for transition metal catalysis and organometallic complexes.
• Dendrimer and Hyperbranched Polymer Construction: Acts as a branching unit or core for building well-defined dendritic structures.
• Surface Functionalization: Employed to modify surfaces with ethynyl groups for subsequent "click chemistry" reactions like CuAAC.
• Cross-coupling Reactions: A valuable substrate in Sonogashira, Heck, and other palladium-catalyzed coupling reactions to form extended π-systems.

Basic Information

Product Name	1,3-Bis[(Trimethylsilyl)ethynyl]benzene
CAS No.	38170-80-8
Molecular Formula	C16H22Si2
Molecular Weight	270.52 g/mol
Synonyms	1,3-Bis(trimethylsilylethynyl)benzene; 1,3-Bis[(trimethylsilyl)ethynyl]benzene; m-Bis(trimethylsilylethynyl)benzene; 1,3-Di(2-trimethylsilylethynyl)benzene; Benzene, 1,3-bis[(trimethylsilyl)ethynyl]-; TMS-protected m-diethynylbenzene
EINECS	Contact for details

Quality Control

Our 1,3-Bis[(Trimethylsilyl)ethynyl]benzene is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications. Our quality commitment aligns with cGMP principles where applicable for high-purity synthetic intermediates.

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 the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to maximize stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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