94334-65-3Relevant academic research and scientific papers
The bis(allyl)bismuth cation: A reagent for direct allyl transfer by lewis acid activation and controlled radical polymerization
Lichtenberg, Crispin,Pan, Fangfang,Spaniol, Thomas P.,Englert, Ulli,Okuda, Jun
, p. 13011 - 13015 (2012)
Cationic organometallic compounds of Group 3 (including the lanthanoids), 4, or 13 elements show increased Lewis acidity and electrophilicity compared to their neutral parent compounds. They serve as efficient polymerization catalysts and as unique organometallic reagents for stoichiometric transformations.[1-3] The Lewis acidity of neutral bismuth(III) compounds has been recognized and exploited in bismuthcatalyzed (co)polymerizations and organic transformations.[4] However, the number of isolated and characterized cationic organobismuth(III) compounds is still limited, and detailed investigations concerning their reactivity have not been reported to date.[5, 6] Only two systems with chelating di(aryl) ligands have been applied as Lewis acid-base catalysts in organic transformations.[6] Herein, we present the isolation and characterization of the bis(allyl)bismuth cation and its application as an efficient allyl transfer reagent and as initiator for the controlled radical polymerization of styrene.
