Biphephos

2,2'-Bis[(2,4-di-tert-butylphenoxy)phosphanyloxy]-3,3'-di-tert-butyl-5,5'-dimethoxy-1,1'-biphenyl
CAS Number
7604-35-5
PubChem
Molecular Formula
C29H46O8P2
Molecular Weight
584.61 g/mol
Catalyst Ligands Catalysts
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Biphephos is the industrial benchmark bisphosphite ligand developed by Union Carbide. It enables highly regioselective rhodium-catalyzed hydroformylation of internal and terminal olefins, with annual industrial production exceeding millions of tons of aldehydes worldwide.

Applications

  • Rhodium-catalyzed hydroformylation of internal olefins
  • Isomerization-hydroformylation of C4 raffinates
  • Linear-selective hydroformylation of long-chain olefins
  • Production of plasticizer and lubricant alcohols

Specifications

Property Value
CAS 7604-35-5
Molecular Formula C29H46O8P2
Molecular Weight 584.61 g/mol
Purity >98%
Appearance White to off-white solid

Features

  • Industrial benchmark for hydroformylation
  • Excellent linear/branched selectivity
  • Robust under continuous-flow conditions
  • Multimillion-ton annual industrial deployment

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