Description

4,4,5,5-Tetramethyl-2-(9,9'-Spirobi[9H-Fluoren]-4-Yl)-1,3,2-Dioxaborolane CAS NO 1161009-89-7 is a high-purity, advanced organic boronic ester derivative, serving as a critical building block in modern synthetic chemistry. Its core value lies in enabling precise carbon-carbon bond formation via Suzuki-Miyaura cross-coupling reactions, a cornerstone technology for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and organic electronics (OLED) industries who require reliable, high-quality intermediates for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel active pharmaceutical ingredients (APIs) and drug candidates through palladium-catalyzed cross-coupling.
• OLED Material Synthesis: Crucial building block for constructing sophisticated organic light-emitting diode (OLED) materials, including host, dopant, and transport layer molecules.
• Agrochemical Development: Used in creating advanced herbicides, fungicides, and insecticides with tailored properties.
• Polymer & Material Science: Enables the synthesis of specialty polymers, conjugated polymers, and organic semiconductors with specific electronic properties.
• Ligand & Catalyst Development: Serves as a starting material for synthesizing novel ligands and organometallic catalysts.
• Academic & Industrial R&D: A vital reagent for method development and exploring new synthetic pathways in research laboratories.

Basic Information

Product Name	4,4,5,5-Tetramethyl-2-(9,9'-Spirobi[9H-Fluoren]-4-Yl)-1,3,2-Dioxaborolane
CAS No.	1161009-89-7
Molecular Formula	C33H31BO2
Molecular Weight	470.41 g/mol
Synonyms	2-(9,9'-Spirobi[9H-fluoren]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9'-spirobi[9H-fluorene]; 9,9'-Spirobi[9H-fluorene]-4-boronic acid pinacol ester; 4-(9,9'-Spirobi[9H-fluoren]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; Spirobifluorene-4-boronic acid pinacol ester; SBF-4-Bpin
EINECS	Contact for details

Quality Control

Our 4,4,5,5-Tetramethyl-2-(9,9'-Spirobi[9H-Fluoren]-4-Yl)-1,3,2-Dioxaborolane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and batch-to-batch consistency suitable for sensitive cross-coupling reactions. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (argon or nitrogen) for long-term storage and when opening the container to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	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.