Description

4,4,5,5-Tetramethyl-2-(Spiro[Fluorene-9,9'-Xanthene]-2-Yl)-1,3,2-Dioxaborolane is a high-value, spirocyclic organic boronic ester derivative, serving as a critical building block in advanced materials synthesis. Its unique fused-ring structure provides exceptional stability and electronic properties, making it indispensable for creating sophisticated functional molecules. This compound is primarily sought after by R&D chemists and process engineers in the pharmaceutical, OLED materials, and organic electronics sectors for cross-coupling reactions and polymer development.

Application

• Suzuki-Miyaura Cross-Coupling Reactions: A key boronic ester reagent for constructing complex biaryl systems in pharmaceutical intermediates and agrochemicals.
• OLED (Organic Light-Emitting Diode) Materials: Used as a precursor for synthesizing host, emitter, and hole/electron transport materials due to its rigid, planar spirofluorene-xanthene core.
• Organic Semiconductor Development: Serves as a monomer or intermediate for creating high-performance conjugated polymers and small molecules for OFETs and OPVs.
• Luminescent Materials & Sensors: The spiro structure is ideal for developing fluorescent probes, chemosensors, and imaging agents with high quantum yield and photostability.
• Pharmaceutical Research: Employed in medicinal chemistry for the late-stage functionalization and diversification of drug candidates.
• Ligand Synthesis for Catalysis: The boronate group can be utilized to create novel ligands for transition metal catalysis.

Basic Information

Product Name	4,4,5,5-Tetramethyl-2-(Spiro[Fluorene-9,9'-Xanthene]-2-Yl)-1,3,2-Dioxaborolane
CAS No.	1160862-12-3
Molecular Formula	C31H27BO3
Molecular Weight	458.36 g/mol
Synonyms	2-(Spiro[Fluorene-9,9'-Xanthene]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 2-(Spiro[9H-Fluorene-9,9'-Xanthen]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; SFX-BPin; Spiro[fluorene-9,9'-xanthene]-2-ylboronic acid pinacol ester; 2-(Spiro[fluorene-9,9'-xanthen]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 1160862-12-3; SFX-Bpin Boronic Ester
EINECS	Contact for details

Quality Control

Our 4,4,5,5-Tetramethyl-2-(Spiro[Fluorene-9,9'-Xanthene]-2-Yl)-1,3,2-Dioxaborolane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR (1H, 13C, 11B), and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We support cGMP compliance for advanced material and pharmaceutical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C or as indicated on the label or COA. This compound is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (argon/nitrogen) for long-term storage and when opening containers to prevent hydrolysis. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
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.