Description

11-(Triphenylphosphoranylidene)-11H-Benzo[B]Fluorene is a specialized organophosphorus compound belonging to the class of phosphorus ylides. This compound matters as a versatile and highly reactive reagent, primarily serving as a key building block in organic synthesis for the formation of complex molecular structures. It is needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials industries for constructing novel carbon-carbon bonds and synthesizing complex heterocycles. The CAS number for this compound is 31083-21-3.

Application

• Wittig Reaction Reagent: A crucial precursor for the synthesis of alkenes via the Wittig olefination, enabling the construction of complex organic molecules with precise stereochemistry.
• Pharmaceutical Intermediate: Used in the research and development of active pharmaceutical ingredients (APIs), particularly for creating specific alkene functionalities in drug candidates.
• Agrochemical Synthesis: Employed in the synthesis of novel pesticides and herbicides, where the introduction of specific alkene groups is required for biological activity.
• Material Science Research: Acts as a monomer or precursor in the development of organic semiconductors, liquid crystals, and other functional organic materials.
• Academic & Industrial R&D: A valuable tool for synthetic organic chemists in universities and corporate R&D labs for methodology development and target molecule synthesis.
• Fine Chemical Production: Utilized in the multi-step synthesis of complex fine chemicals and specialty compounds where traditional coupling methods are insufficient.

Basic Information

Product Name	11-(Triphenylphosphoranylidene)-11H-Benzo[B]Fluorene
CAS No.	31083-21-3
Molecular Formula	C41H29P
Molecular Weight	552.65 g/mol
Synonyms	Benzo[b]fluoren-11-ylidenetriphenylphosphorane; 11-(Triphenylphosphoranylidene)benzo[b]fluorene; 11H-Benzo[b]fluoren-11-ylidenetriphenyl-λ5-phosphane; Triphenyl(11H-benzo[b]fluoren-11-ylidene)phosphorane; Wittig Reagent derived from 11H-Benzo[b]fluoren-11-one
EINECS	Contact for details

Quality Control

Our 11-(Triphenylphosphoranylidene)-11H-Benzo[B]Fluorene is produced and handled under strict quality management protocols. Each batch undergoes rigorous analytical testing, including NMR, HPLC, and elemental analysis, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our commitment to quality supports research reproducibility and process development from lab to pilot scale.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Recommended storage temperature is between 2°C and 8°C (refrigerated) for long-term stability, or at controlled room temperature for short-term use. Keep the container tightly sealed under an inert atmosphere (argon or nitrogen) to prevent degradation.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.