Dicyclohexyl(2-methylphenyl)phosphine
Dicyclohexyl(2-methylphenyl)phosphine (CAS: 173593-25-4, C19H29P) is a versatile phosphine ligand with a molecular weight of 288.41 g/mol. It serves as a key component in various catalytic systems, particularly in nickel-catalyzed coupling reactions. This compound is also employed as a cocatalyst and ligand in palladium and rhodium-catalyzed processes, enabling efficient chemical synthesis and cross-coupling transformations, especially for challenging substrates.
- IUPAC
- (o-Tolyl)dicyclohexylphosphine
- Synonyms
- (o-Tolyl)dicyclohexylphosphine

Nickel-Catalyzed Coupling Reactions
Functions as a cocatalyst in nickel-catalyzed coupling reactions involving alkenes, aldehydes, and silyl triflates, facilitating the formation of new carbon-carbon bonds.
Cross-Coupling of Aryl Chlorides
Acts as a catalyst for the coupling of nonactivated and deactivated aryl chlorides with arylboronic acids, expanding the scope of cross-coupling methodologies.
Preparation of Organophosphorus Compounds
Mediates the preparation of (alkyl)(aryl)phosphines and triarylphosphines, which are crucial as mediators in rhodium-catalyzed hydroformylation reactions of propene and hexene.
Heck Vinylation Ligand
Serves as a ligand in palladium-catalyzed Heck vinylation of aryl halides with butyl acrylate, involving the cleavage of P-C bonds.
| Molecular weight | 288.41 |
|---|---|
| Empirical formula | C19H29P |
| Assay | 95% |
| Application | Cocatalyst for:• Nickel-catalyzed coupling reactions of alkenes, aldehydes, and silyl triflates1Catalyst for:• Coupling of nonactivated and deactivated aryl chlorides with arylboronic acid2• Preparation of (alkyl)(aryl)phosphines and triarylphosphines, as mediators of rhodium-catalyzed propene and hexene hydroformylation reactions3• Ligand for PC bond cleavage during Heck vinylation of aryl halides with Bu acrylate in presence of palladium catalyst compounds4 |
| Melting point | 90-93 °C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Dicyclohexyl(2-methylphenyl)phosphine used for?
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Dicyclohexyl(2-methylphenyl)phosphine is used as a cocatalyst and ligand in various catalytic reactions, including nickel-catalyzed coupling of alkenes and aldehydes, cross-coupling of aryl chlorides, preparation of organophosphorus compounds, and Heck vinylation reactions.
What are the CAS number and formula for Dicyclohexyl(2-methylphenyl)phosphine?
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The CAS number is 173593-25-4 and the empirical formula is C19H29P.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Dicyclohexyl(2-methylphenyl)phosphine with an assay of 95%. This product is supplied for research and laboratory use, and is not represented as USP, BP, EP, or other pharmacopoeia grades.
What are the safety considerations for handling this compound?
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This compound is a Warning irritant (H315, H319, H335) and may cause long lasting harmful effects to aquatic life (H413). It is recommended to use a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation and avoid inhalation of dust.
How is this chemical shipped and exported?
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Tech Serve Solutions, a specialist global supplier and exporter, packages and exports Dicyclohexyl(2-methylphenyl)phosphine according to international shipping regulations for chemical products.
How can I request a sample or quote?
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To request a sample or obtain a quote for Dicyclohexyl(2-methylphenyl)phosphine, please contact our sales team through the website or via the provided contact details.
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