Description

(2,7-Dimethyl-9H-fluoren-9-ylidene)triphenylphosphorane is a specialized ylide reagent widely used in organic synthesis, particularly in Wittig and related olefination reactions. Its value lies in its ability to facilitate the stereoselective construction of complex organic molecules, including conjugated systems and advanced intermediates. This high-purity reagent is essential for research and development laboratories in the pharmaceutical, agrochemical, and advanced materials sectors, where precise and efficient carbon-carbon bond formation is critical.

Application

• Wittig Reaction Reagent: A key precursor for generating reactive ylides used in the synthesis of alkenes from carbonyl compounds.
• Pharmaceutical Intermediate Synthesis: Used in the construction of complex drug candidates, especially those containing conjugated or sterically hindered olefinic bonds.
• Agrochemical Active Ingredient Development: Employed in the synthesis of novel herbicides, fungicides, and plant growth regulators.
• Advanced Material Precursor: Facilitates the synthesis of organic semiconductors, light-emitting materials (OLEDs), and other functional organic compounds.
• Academic & Industrial R&D: A valuable tool for methodological development in organic chemistry and process chemistry optimization.
• Fine Chemical Production: Used in the multi-step synthesis of specialty chemicals, flavors, and fragrances requiring specific alkene geometries.

Basic Information

Item	Details
Product Name	(2,7-Dimethyl-9H-fluoren-9-ylidene)triphenylphosphorane
CAS No.	18916-67-1
Molecular Formula	C33H27P
Molecular Weight	454.54 g/mol
Synonyms	9-(Triphenylphosphoranylidene)-2,7-dimethyl-9H-fluorene; (2,7-Dimethylfluoren-9-ylidene)triphenylphosphorane; 2,7-Dimethyl-9-(triphenylphosphoranylidene)-9H-fluorene; Fluorenylidene phosphorane derivative; Wittig reagent based on dimethylfluorene
EINECS	Contact for details

Quality Control

Our (2,7-Dimethyl-9H-fluoren-9-ylidene)triphenylphosphorane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high reactivity. We provide comprehensive analytical data to support its use in critical synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every batch upon request, ensuring full traceability and compliance with your internal quality standards.

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 material is sensitive to moisture and air; for long-term storage under an inert atmosphere (argon or nitrogen), please contact our technical team for specific recommendations.

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.