Et(2)Al(+) alumenium ion-like chemistry. synthesis and reactivity toward alkenes and alkene oxides

Kee-Chan Kim; Christopher A Reed; Gregory S Long; Ayusman Sen

doi:10.1021/ja0259990

Et(2)Al(+) alumenium ion-like chemistry. synthesis and reactivity toward alkenes and alkene oxides

J Am Chem Soc. 2002 Jul 3;124(26):7662-3. doi: 10.1021/ja0259990.

Authors

Kee-Chan Kim¹, Christopher A Reed, Gregory S Long, Ayusman Sen

Affiliation

¹ Department of Chemistry, Pennsylvania State University, University Park, PA 16802, USA.

PMID: 12083912
DOI: 10.1021/ja0259990

Abstract

Inert weakly coordinating carborane anions, CB(11)H(6)X(6)(-) (X = Cl, Br), allow access to the long sought, highly electrophilic diethylaluminum moiety in Et(2)Al(CB(11)H(6)X(6)). X-ray crystallography reveals ion-like structural features reminiscent of the corresponding trialkylsilylium species. Et(2)Al(CB(11)H(6)X(6)) is a potent catalyst for the electrophilic ethenation of benzene, the polymerization of cyclohexene oxide, and the oligomerization of ethene to a low molecular weight, highly branched product.