Description

Bis(1,1-Dimethylethyl)[2(Or 5)-Methyl-5(Or 2)-(1-Methylethyl)Cyclohexyl]Phosphine is a specialized tertiary phosphine ligand, a key building block in advanced organometallic chemistry and catalysis. Its sterically hindered, electron-rich structure makes it an essential component for constructing highly active and selective transition metal catalysts, particularly for challenging cross-coupling and hydrogenation reactions. This high-purity chemical is primarily required by pharmaceutical R&D laboratories, fine chemical synthesis units, and academic research institutions developing next-generation catalytic processes.

Application

• Ligand in Homogeneous Catalysis: A crucial precursor for synthesizing palladium, nickel, and rhodium complexes used in C-C and C-N cross-coupling reactions (e.g., Suzuki, Heck, Buchwald-Hartwig).
• Asymmetric Synthesis: Serves as a chiral scaffold or precursor for developing enantioselective catalysts in pharmaceutical intermediate manufacturing.
• Polymerization Catalysis: Used in the development of catalysts for olefin polymerization and other polymer synthesis techniques.
• Material Science Research: Employed in the synthesis of novel phosphine-based materials, metal-organic frameworks (MOFs), and surface modifiers.
• Hydrogenation & Hydrosilylation: Acts as a ligand in catalysts for selective reduction of unsaturated bonds in complex molecules.
• Academic & Industrial R&D: A valuable tool for chemists exploring new catalytic methodologies and reaction mechanisms.

Basic Information

Product Name	Bis(1,1-Dimethylethyl)[2(Or 5)-Methyl-5(Or 2)-(1-Methylethyl)Cyclohexyl]Phosphine
CAS No.	74764-15-1
Molecular Formula	C19H39P
Molecular Weight	298.49 g/mol
Synonyms	Di-tert-butyl(2-methyl-5-isopropylcyclohexyl)phosphine; Di-tert-butyl(5-methyl-2-isopropylcyclohexyl)phosphine; (2-Methyl-5-isopropylcyclohexyl)di-tert-butylphosphine; DTBP-Cy ligand precursor; Sterically hindered trialkylphosphine; Tertiary cyclohexylphosphine ligand; Phosphine ligand 74764-15-1
EINECS	Contact for details

Quality Control

Every batch of our phosphine ligands is produced and analyzed under strict inert atmosphere conditions to prevent oxidation and ensure maximum purity and activity. We employ advanced analytical techniques including GC, NMR (31P, 1H, 13C), and elemental analysis to verify chemical identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment, ensuring traceability and compliance with your internal quality protocols and research requirements.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (argon or nitrogen) in a cool, dry place. Recommended storage temperature is 2-8°C for long-term stability. Due to its sensitivity to oxygen and moisture, containers should be flushed with inert gas after each opening.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (NMR)	Conforms to structure
Purity (GC)	≥ 97.0%
31P NMR Purity	≥ 95.0%
Water Content (KF)	≤ 0.1%

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