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Reversible C=C Bond Activation by an Intramolecularly Coordinated Antimony(I) Compound
Monika Kořenková1, Martin Hejda1, Milan Erben1
1Department of General and Inorganic Chemistry FCHT, University of Pardubice, Studentská 573, Pardubice, 532 10, Czech Republic.
Abstract:
The reaction of N,C,N-chelated stibinidene ArSb (1) (Ar=C6 H3 -2,6-(CH=NtBu)2 ) with selected N-alkyl/aryl-maleimides RN(C(O)CH)2 (R=Me, tBu, Ph) gave the addition products with bridged bicyclic [2.2.1] structure containing an antimony atom at the bridgehead position, fused with a 6-membered benzene and a 5-membered N-alkyl/aryl-pyrrolidine ring. These compounds were completely characterized. More importantly, additional studies showed that these reactions are reversible in solution, thereby representing an unprecedented reversible activation of a C=C bond by an antimony(I) compound.
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