Description

Thieno[3,2-B]Thiophene, 2-Hexyl-5-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)- is a high-value, specialty organic building block featuring a fused thienothiophene core functionalized with a hexyl chain and a pinacol boronate ester group. This compound is essential for advanced cross-coupling reactions, enabling the precise synthesis of complex conjugated molecular architectures. It is primarily sought by researchers and manufacturers in the fields of organic electronics, pharmaceuticals, and materials science for developing novel semiconductors, OLED materials, and bioactive molecules.

Application

• Organic Semiconductor Synthesis: A key monomer for constructing donor-acceptor polymers and small molecules used in organic field-effect transistors (OFETs) and organic photovoltaics (OPVs).
• OLED Material Development: Serves as a crucial intermediate in the production of light-emitting layers for next-generation display and lighting technologies.
• Pharmaceutical Intermediates: Used in Suzuki-Miyaura and other palladium-catalyzed cross-coupling reactions to create novel drug candidates and complex bioactive molecules.
• Advanced Material Research: Enables the synthesis of conjugated systems for sensors, non-linear optical materials, and other functional organic materials.
• Chemical Synthesis & Catalysis: Acts as a versatile boronic ester reagent for introducing the thieno[3,2-b]thiophene moiety into complex molecular frameworks.

Basic Information

Product Name	Thieno[3,2-B]Thiophene, 2-Hexyl-5-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-
CAS No.	944826-49-7
Molecular Formula	C₁₈H₂₉BO₂S₂
Molecular Weight	360.36 g/mol
Synonyms	2-Hexyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thieno[3,2-b]thiophene; 2-Hexylthieno[3,2-b]thiophene-5-boronic acid pinacol ester; 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-hexylthieno[3,2-b]thiophene; Thieno[3,2-b]thiophene-5-boronic acid, 2-hexyl-, pinacol ester; TT-5-BPin (with hexyl substituent); 2-n-Hexyl-5-(pinacolatoboryl)thieno[3,2-b]thiophene
EINECS	Contact for details

Quality Control

Our production of Thieno[3,2-B]Thiophene, 2-Hexyl-5-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)- adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity, critical for sensitive cross-coupling reactions. Each lot is characterized by advanced analytical techniques including NMR, HPLC, and GC-MS. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your R&D and quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C under an inert atmosphere (e.g., argon or nitrogen) due to its moisture-sensitive and light-sensitive nature. Allow the sealed container to reach room temperature before opening to prevent condensation and moisture ingress.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (NMR)	Conforms to structure
Purity (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.