Description

11-(Triphenylphosphoranylidene)-11H-Benzo[A]Fluorene is a specialized organophosphorus compound featuring a benzo[a]fluorene core, widely recognized as a versatile ylide reagent in advanced organic synthesis. Its primary value lies in its role as a key building block for constructing complex molecular architectures, particularly through Wittig and related olefination reactions. This high-purity intermediate is essential for researchers and process chemists in the pharmaceutical, agrochemical, and materials science industries developing novel active ingredients and functional organic materials.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of novel drug candidates, especially those with complex polycyclic frameworks.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides requiring specific olefinic components.
• Materials Science Research: Acts as a building block for creating organic semiconductors, light-emitting materials, and other functional π-conjugated systems.
• Academic & R&D Laboratories: A valuable reagent for methodological development in organic chemistry, particularly in stereoselective synthesis.
• Fine Chemical Production: Employed in the custom synthesis of specialty chemicals and complex organic molecules for various industrial applications.
• Ligand Precursor: Can be utilized in the preparation of specialized phosphine ligands for catalysis.

Basic Information

Product Name	11-(Triphenylphosphoranylidene)-11H-Benzo[A]Fluorene
CAS No.	31083-20-2
Molecular Formula	C₄₁H₂₉P
Molecular Weight	552.64 g/mol
Synonyms	Benzo[a]fluoren-11-ylidenetriphenylphosphorane; 11H-Benzo[a]fluoren-11-ylidenetriphenyl-λ⁵-phosphane; Triphenyl(11H-benzo[a]fluoren-11-ylidene)phosphorane; (11H-Benzo[a]fluoren-11-ylidene)triphenylphosphorane; Wittig Reagent derived from 11H-Benzo[a]fluoren-11-one; 11-(Triphenylphosphoranylidene)benzo[a]fluorene
EINECS	Contact for details

Quality Control

Every batch of 11-(Triphenylphosphoranylidene)-11H-Benzo[A]Fluorene is manufactured and tested under strict quality management protocols to ensure consistency and high purity for research and development applications. Our standard grade typically meets a purity specification of ≥95% (by HPLC), with specifications tailored for specific synthetic requirements. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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