1449700-76-8

Basic information

• Product Name: lithium-2-(di-(4-trifluormethyl-2-methoxy-phenyl)phosphine)benzenesulfonate
• CAS NO: 1449700-76-8
• Molecular Weight: 544.337
• Mol File: 1449700-76-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: lithium-2-(di-(4-trifluormethyl-2-methoxy-phenyl)phosphine)benzenesulfonate(CAS DataBase Reference)
• NIST Chemistry Reference: lithium-2-(di-(4-trifluormethyl-2-methoxy-phenyl)phosphine)benzenesulfonate(1449700-76-8)
• EPA Substance Registry System: lithium-2-(di-(4-trifluormethyl-2-methoxy-phenyl)phosphine)benzenesulfonate(1449700-76-8)

Safety Data

• Hazardous Substances Data: 1449700-76-8(Hazardous Substances Data)

Upstream product

• 109-72-8 n-butyllithium 
• 1449700-72-4 chloro-di(4-trifluoromethyl-2-methoxy-phenyl)phosphine 
• 98-11-3 benzenesulfonic acid 
• 40161-54-4 1-bromo-2-fluoro-4-(trifluoromethyl)benzene 
• 402-07-3 1-bromo-2-methoxy-4-(trifluoromethyl)benzene 

Downstream Products

• 1449700-83-7 2-(di(-4-trifluormethyl-2-methoxy-phenyl)phosphine)benzenesulfonic acid 
• 1449700-86-0 bis{N,N’-{(κ2-P,O)-2-[di-(2-methoxy-4-trifluoromethyl-phenyl)-phosphine]benzenesulfonate} palladium(II)-methyl}-N,N,N’,N’-tetramethylethylenediamine 

Relevant articles and documents

Electronic influences in phosphinesulfonato palladium(II) polymerization catalysts

To study the influence of electronics on catalytic polymerization properties independent from sterics, phosphinesulfonato Pd(II) complexes bearing remotely located substituents on the nonchelating P-bound aryls [κ2-(P,O)-(4-R-2-anisyl)2PC6H 4SO2O]Pd(Me)(dmso) (1a-e-dmso: 1a, R = CF3; 1b, R = Cl; 1c, R = H; 1d, R = CH3; 1e, R = OCH3) were prepared. The electron-poor complex 1a-dmso (4-CF3) undergoes the fastest insertion of methyl acrylate (MA) and is the most active for ethylene polymerization. The polyethylene molecular weight increases by a factor of 2 for the more electron rich complex 1e-dmso (4-OCH3) (Mn = 17 × 103 vs 8 × 103 for 1a-dmso (4-CF 3)). MA/ethylene copolymerization experiments revealed that the MA incorporation ratio and copolymer molecular weights are largely independent of the electronic nature of the remote substituents. These trends were further confirmed by studies of two mixed P-aryl/-alkyl complexes 1f-dmso ([κ2-(2,4,6-(OMe)3C6H2)( tBu)PC6H4SO2O]Pd(Me)(dmso)) and 1g-dmso ([κ2-(C6H5)(tBu) PC6H4SO2O]Pd(Me)(dmso)). In ethylene/MA copolymerization, 1f-dmso affords a significantly higher molecular weight polymer with reasonable MA incorporation (Mn = 12 × 10 3 and 7.7 mol % MA) and activities similar to those observed for complexes 1a-e-dmso.