640270-80-0

Upstream product

• 934-53-2 cumenyl chloride 
• 223769-13-9 1,2-C₆F₄(B(C(C₆F₅)2)2 

Downstream Products

• 223769-13-9 1,2-C₆F₄(B(C(C₆F₅)2)2 
• 640270-81-1 [C6F4(B(C6F5)2)2(μ-OMe][CMe2Ph] 
• 640270-82-2 [C6F4(B(C6F5)2)2(μ-Cl][CPh3] 
• 959698-55-6 C₆F₄(B(C₆F₅)2)2N₃^(1-)*(C₆H₅)3C⁽¹⁺⁾=(C₆H₅)3CC₆F₄(B(C₆F₅)2)2N₃ 
• 959698-83-0 C₆F₄(B(C₆F₅)2)2N₃^(1-)*(CH₃)2CNHC₆H₅⁽¹⁺⁾=(CH₃)2CNHC₆H₅C₆F₄(B(C₆F₅)2)2N₃ 
• 959698-54-5 C₆F₄(B(C₆F₅)2)2N₃^(1-) 
• 1059574-25-2 bis(pentafluorophenyl)boronic acid, methyl ester 
• 270078-47-2 [C₆F₄(B(C₆F₅)2)2OCH₃]^(1-) 

Relevant academic research and scientific papers

Isobutene Polymerization Using a Chelating Diborane Co-Initiator

Lewis acidic diborane 1 (J. Am. Chem. Soc. 1999, 121, 3244?3245) is highly effective for both proton- and cationogen-initiated isobutene polymerization in hydrocarbon media at low temperature. Reactions of diborane 1 with cumyl chloride and cumyl methyl ether were studied by variable-temperature 1H and 19F NMR spectroscopy. At low temperatures stable ion pairs 2a and 2b are formed; at higher temperatures these ion-pairs form phenyl-1,3,3-trimethylindan (3) with concomitant release of HCl to form 1 in the case of 2a or degradation of the anion (2b). Reaction between Ph3C-Cl and diborane 1 resulted in the generation of an ion-pair 4 consisting of the Ph3C cation very weakly associated with the chelated, μ-Cl counteranion as revealed by X-ray crystallography. Copyright

Formation of chelated counteranions using lewis acidic diboranes: Relevance to isobutene polymerization

The reactions of chelating diboranes with PhCMe2Cl and related initiators were studied by variabletemperature NMR spectroscopy. Although thermally stable ion-pairs featuring weakly coodinating anions (WCA) are formed, isobutene polymerization is complicated by the tendency of these WCA to act as hindered bases toward Bronsted acidic chain ends.