Description

Butylidenebis[2-tert-Butyl-5-Methyl-p-Phenylene]-P,P,P',P'-Tetratridecylbis(Phosphine) is a specialized, high-molecular-weight bisphosphine ligand designed for advanced catalytic applications. This compound matters for its ability to provide steric bulk and electronic tuning to transition metal catalysts, significantly influencing reaction selectivity and efficiency. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, fine chemical, and advanced materials sectors for developing novel synthetic pathways.

Application

• As a ligand in homogeneous catalysis for cross-coupling reactions (e.g., Suzuki, Heck, Negishi).
• For asymmetric hydrogenation and other stereoselective transformations in pharmaceutical intermediate synthesis.
• In the development of novel organometallic complexes for polymerization and materials science.
• As a key component in catalyst screening libraries for high-throughput experimentation (HTE).
• For academic and industrial research into new catalytic cycles and mechanisms.
• Potential use in specialty chemical manufacturing requiring highly selective catalytic steps.

Basic Information

Product Name	Butylidenebis[2-tert-Butyl-5-Methyl-p-Phenylene]-P,P,P',P'-Tetratridecylbis(Phosphine)
CAS No.	13003-12-8
Molecular Formula	C79H128P2
Molecular Weight	1155.82 g/mol
Synonyms	Bis(2,4-di-tert-butyl-6-methylphenyl)butylidenediphosphine; 1,1'-Butylidenebis[2-(1,1-dimethylethyl)-5-methylbenzene]tetratridecyl ester, phosphonic acid; Tetratridecyl 1,1'-butylidenebis[2-(1,1-dimethylethyl)-5-methylbenzene] diphosphonate; DTBM-Butylidene-Bisphosphine; Ligand L* (context-specific); Contact for additional trade names and abbreviations.
EINECS	Contact for details

Quality Control

Our production of this advanced ligand adheres to strict quality protocols to ensure batch-to-batch consistency and performance reliability in sensitive catalytic applications. Each lot is characterized using advanced analytical techniques including NMR, HPLC, and elemental analysis. Certificates of Analysis (COA) detailing purity, identity, and key specifications are provided with every shipment.

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, minimize exposure to air and moisture during handling.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
31P NMR	Conforms to reference
Elemental Analysis	Within theoretical range

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