Description

1-o-Methyl 3-o-Methyl 2-(Tri-I-Butylphosphoranylidene)Propanedioate is a specialized organophosphorus reagent, specifically a stabilized phosphonate ylide derivative. This compound is valued for its role as a key intermediate in advanced organic synthesis, particularly in the construction of complex molecular frameworks. It is primarily needed by research institutions and industrial R&D departments in the pharmaceutical and agrochemical sectors for developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of complex drug candidates, particularly for carbon-carbon bond formation via Wittig and related olefination reactions.
• Agrochemical Synthesis: Used in the research and development of novel pesticides and herbicides, enabling the creation of specific alkene functionalities.
• Material Science Research: Serves as a precursor in the development of specialized polymers and functional organic materials with tailored properties.
• Academic & Industrial R&D: A valuable reagent for methodological development in organic chemistry, facilitating new synthetic pathways.
• Fine Chemical Production: Employed in the multi-step synthesis of high-value, complex fine chemicals and flavors/fragrances intermediates.

Basic Information

Product Name	1-o-Methyl 3-o-Methyl 2-(Tri-I-Butylphosphoranylidene)Propanedioate
CAS No.	501939-33-9
Molecular Formula	C20H39O5P
Molecular Weight	390.50 g/mol
Synonyms	Dimethyl (triisobutylphosphoranylidene)malonate; Triisobutylphosphoranylidene Malonic Acid Dimethyl Ester; (Triisobutyl-λ5-phosphanylidene)propanedioic Acid Dimethyl Ester; Phosphonium, (2,2-dimethoxy-2-oxoethylidene)triisobutyl-, inner salt; CAS 501939-33-9; Phosphorane, (2,2-dimethoxy-2-oxoethylidene)triisobutyl-; Malonic acid, 2-(triisobutylphosphoranylidene)-, dimethyl ester
EINECS	Contact for details

Quality Control

Our production of 1-o-Methyl 3-o-Methyl 2-(Tri-I-Butylphosphoranylidene)Propanedioate adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. Each lot is fully characterized by NMR (1H, 13C, 31P), IR spectroscopy, and chromatographic methods (HPLC/GC). A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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 and light, prolonged exposure to air or ambient conditions should be avoided.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 0.5%

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