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Synlett 2000; 2000(5): 0746-0748
DOI: 10.1055/s-2000-6633
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Selective Nicholas Reactions of 1,4-Diyne Tetracobalt Complexes

Richard Guo* , James R. Green
  • *Chemistry and Biochemistry, School of Physical Sciences, University of Windsor, Windsor, Ontario, N9B 3P4, Canada; Fax (519)-973-7098; E-mail: jgreen@uwindsor.ca
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Publication Date:
31 December 2000 (online)

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The dodecacarbonyltetracobalt complexes of hepta-2,5-diynyl-1,7-diol derivatives 3 and 4 undergo selective monosubstitution in the presence of BF3-OEt2. Disubstitution by two different or identical nucleophiles may also be accomplished.

alkyne complexes - carbocations - chemoselectivity - Lewis acids - transition metals