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Pure Appl. Chem., 2006, Vol. 78, No. 7, pp. 1349-1355

Polyborane reactions in ionic liquids

Yuqi Li, Upal Kusari, Patrick J. Carroll, Mark G. Bradley and Larry G. Sneddon

Department of Chemistry, University of Pennsylvania, Philadelphia,PA 19104-6323, USA

Abstract: In contrast to reactions that have been observed in traditional organic solvents, decaborane olefin-hydroboration and alkyne-insertion reactions proceed in ionic liquid (IL) solvents without the need of a catalyst. These reactions now provide important new, high-yield synthetic pathways to functionalized decaborane and ortho-carborane clusters. As illustrated by the synthesis of n-B18H22, ILs can also provide an inert reaction medium for carrying out dehydrocondensation reactions leading to higher fused cage compounds.