Exhaustive Chlorination of [B12H12]2−without Chlorine Gas and the Use of [B12Cl12]2−as a Supporting Anion in Catalytic Hydrodefluorination of Aliphatic C−F Bonds
Authors:
- 4 April 2011
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 50 (7) , 2726-2728
Abstract
The fully chlorinated closo-dodecaborate salt Cs2[B12Cl12] was prepared in high yield from Cs2[B12H12] and SO2Cl2 in acetonitrile at refluxing temperature. [Ph3C]2[B12Cl12] was obtained by simple metathesis reactions. Catalytic hydrodefluorination of benzotrifluoride sp3 C−F bonds was accomplished using [Ph3C]2[B12Cl12] as a precatalyst and Et3SiH as a stoichiometric reagent. Full consumption of the sp3 C−F bonds in p-FC6H4CF3 and C6F5CF3 with a turnover number up to 2000 was achieved.Keywords
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