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CAS RN: 7688-25-7 | Product Number: B1246


Purity: >98.0%(GC)
  • Tetramethylenebis(diphenylphosphine)
2   ≥20 
3   19  

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Product Number B1246
Purity / Analysis Method >98.0%(GC)
Molecular Formula / Molecular Weight C__2__8H__2__8P__2 = 426.48  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Air Sensitive
CAS RN 7688-25-7
Reaxys Registry Number 706446
PubChem Substance ID 87564182
SDBS (AIST Spectral DB) 18417
MDL Number


Appearance White to Almost white powder to crystaline
Purity(GC) min. 98.0 %
Purity(Iodometric Titration) min. 95.0 %
Melting point 133.0 to 137.0 °C
Properties (reference)
Melting Point 134 °C
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
EC Number 231-698-7
Transport Information:
HS Number 2931399090
Rhodium-Catalyzed Cross-coupling of Organoboron Compounds with Vinyl Acetate

Typical procedure: Under nitrogen atmosphere, a mixture of an arylboron compounds (0.50 mmol), [RhCl(cod)]2 (6.2 mg, 13 µmol), DPPB (11.7 mg, 28 µmol), and K3PO4 (320 mg, 1.5 mmol) is diluted with toluene (2.0 mL). Alkenyl acetate (1.1 or 2.5 mmol) and tert-amyl alcohol (0.55-1.5 mmol) are added into the resulting suspension at room temperature. The mixture is stirred at 100℃ for 24 h and then diluted with hexane (2.0 mL) or EtOAc (2.0 mL). After the filtration through a Celite pad, solvent is removed from the filtrate under reduced pressure. The residue is purified with a flash column chromatography (EtOAc-hexane) to give the desired product.


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