64091-23-2

Basic information

• Product Name: [aS,(-)]-2,2'-Bis[(diphenylphosphino)methyl]-1,1'-binaphthalene
• Synonyms: (-)-Naphos[1,1];[aS,(-)]-[[1,1'-Binaphthalene]-2,2'-diylbis(methylene)]bis(diphenylphosphine);[aS,(-)]-2,2'-Bis[(diphenylphosphino)methyl]-1,1'-binaphthalene;Naphos[1,1]
• CAS NO: 64091-23-2
• Molecular Formula: C₄₆H₃₆P₂
• Molecular Weight: 650.725562
• Mol File: 64091-23-2.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: [aS,(-)]-2,2'-Bis[(diphenylphosphino)methyl]-1,1'-binaphthalene(CAS DataBase Reference)
• NIST Chemistry Reference: [aS,(-)]-2,2'-Bis[(diphenylphosphino)methyl]-1,1'-binaphthalene(64091-23-2)
• EPA Substance Registry System: [aS,(-)]-2,2'-Bis[(diphenylphosphino)methyl]-1,1'-binaphthalene(64091-23-2)

Safety Data

• Hazardous Substances Data: 64091-23-2(Hazardous Substances Data)

Upstream product

• 1079-66-9 chloro-diphenylphosphine 
• 68-12-2 N,N-dimethyl-formamide 
• 15475-27-1 potassium diphenylphosphine 
• 54130-90-4 2,2'-di(bromomethyl)-1,1'-binaphthalene 
• 71031-40-8 2,2'-bis(diphenylphosphinylmethyl)-1,1'-binaphthyl 
• 829-85-6 diphenylphosphane 

Downstream Products

• 163557-11-7 [2,2'-bis((diphenylphosphino)methyl)-1,1'-binaphtyl]tetracarbonylmolybdenum 
• 192220-88-5 RhH(CO)2(2,2'-bis(diphenylphosphinomethyl)-1,1'-binaphthyl) 
• 1421057-39-7 [Cu(bathocuproine)(naphos)]PF₆ 

Relevant articles and documents

IX. Mono- and biphasic asymmetric hydroformylation with rhodium catalysts of the diphosphine ligand NAPHOS and its sulfonated derivatives

Both enantiomers of the diphosphine 2,2′-bis(diphenylphosphinomethyl)-1,1′-binaphthyl NAPHOS were prepared by resolution of the racemic P,P′-dioxide and subsequently applied in the rhodium-catalyzed, asymmetric hydroformylation of styrene. Optically active, highly water-soluble derivatives BINAS were prepared by direct sulfonation of the enantiopure diphosphine NAPHOS and applied in aqueous/organic, two-phase hydroformylation of styrene. The catalytically active rhodium complexes HRh(CO)2(P-P) of both NAPHOS and BINAS were prepared and characterized by infrared and NMR spectroscopy. Optical yields are lower in two-phase hydroformylation compared with the conventional single-phase (organic solvent) technique.

Binas - Synthesis and use of a new ligand for propylene hydroformylation

BINAS is a new, very efficient ligand for propylene hydroformylation. BINAS is made by the sulfonation of NAPHOS. Different synthetic routes to NAPHOS are discussed. A new two step synthesis starting from 2,2′-bis(bromomethyl)-1,1′-binaphthyl is described.