93634-87-8 T-butyldicyclohexylphosphine
Product name: T-BUTYLDICYCLOHEXYLPHOSPHINE
CAS number: 93634-87-8
Molecular formula: C16H31P
Molecular weight: 254.39
EINECS number:
MDL No.:MFCD03426984
Specification:
| Appearance | Colorless clear liquid |
| Purity | NLT 98% |
Application:
Boiling point: 333.4 ± 9.0 ° C
Density: 0.939 g/mL at 25 ° C (lit.)
Sensitivity: air sensitive
| Application Fields |
1. Catalysis (Organometallic & Organic Synthesis) 2. Pharmaceutical Intermediate Synthesis3. Fine Chemicals Production |
| Specific Applications |
1. Catalysis Field- Ligand precursor for Pd-catalyzed cross-coupling reactions (e.g., Suzuki-Miyaura, Stille, Buchwald-Hartwig amination)- Component of catalyst systems for olefin hydrogenation and isomerization- Ligand for Ni-catalyzed C-C bond formation reactions 2. Pharmaceutical Synthesis- ligand in catalytic systems for synthesizing antitumor drug intermediates (e.g., arylamine derivatives of targeted cancer drugs)- Catalyst ligand for preparing antibiotic intermediates (modification of β-lactam rings)- Enables efficient synthesis of chiral pharmaceutical building blocks 3. Fine Chemicals Production- Ligand for catalytic synthesis of specialty fragrances and flavors- Used in the preparation of functional organic materials (e.g., organic semiconductors) |
| Typical Dosage/Usage Ratio |
1. Cross-coupling Reactions- Molar ratio of ligand (T-butyldicyclohexylphosphine) to metal catalyst (Pd/Ni): 1.0–2.0:1 (optimizes catalyst activity and stability)- Relative dosage to substrate: 1–5 mol% (varies by reaction type and substrate reactivity) 2. Pharmaceutical Intermediate Synthesis- Batch usage: 0.5–3 kg per ton of final pharmaceutical intermediate (depending on synthetic route and yield) 3. Fine Chemicals Preparation- Ligand dosage: 0.3–2 mol% relative to main reactant (for high-selectivity reactions) |
| Notes on Application | - Highly air-sensitive; must be handled and stored under inert gas (nitrogen or argon) to avoid oxidation- Typically used as a ligand precursor, often converted to its borane adduct or phosphonium salt for improved stability- Reaction conditions (temperature, solvent) need to be optimized according to specific catalytic systems |
Synonyms:
tert-Butyldicyclohexylphosphine
93634-87-8
tert-butyl(dicyclohexyl)phosphane
tert-butyldicyclohexylphosphane
Phosphine, dicyclohexyl(1,1-dimethylethyl)-
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