Influence of HMPA on reducing power and reactivity of SmBr(2).
[reaction: see text] Addition of HMPA to SmBr(2) in THF produces a reactant with an estimated redox potential of -2.63 +/- 0.01 V (vs Ag/AgNO(3)). This powerful reductant is capable of reducing ketimines and alkyl chlorides at room temperature. Although the structure of the reductant has not been established, it is nonetheless a powerful addition to the arsenal of samarium-based reductants currently utilized.
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Department of Chemistry, University of Toledo, Toledo, Ohio 43606, USA.
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