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Synlett 1997; 1997(10): 1117-1127
DOI: 10.1055/s-1997-974
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A Soft Spot for Alkynes

Uwe H. F. Bunz*
  • *MPI für Polymerforschung, Ackermannweg 10, 55021 Mainz, Germany, Fax: 496131-379-100
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Publication Date:
31 December 2000 (online)

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The synthesis of alkynylated cyclobutadiene complexes (iron/cobalt) and cymantrenes by a metalation/iodination/coupling sequence (MIC-sequence) is reviewed. The MIC-sequence can be applied repeatedly upon C4H4Fe(CO)3 or C5H5Mn(CO)3 leading to multiply ethynylated π-complexes. These multiply ethynylated π-complexes can be envisioned as segments out of carbon nets such as 21 or organometallic fullerenynes 39.

organometallic alkynes - multiply ethynylated π-complexes - cyclobutadiene complexes - cymantrenes - liquid crystalline polymers - Stille couplings