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Synthesis of cyclophanetetrayne complexes from bis(propargyldicobalt) dication equivalents
1Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada.
Chemical Communications (Cambridge, England)
|August 23, 2002
Abstract:
Nicholas reactions of the p-phenyl linked bis(propargyl acetate) complex (3a) with electron rich arenes give cyclophanetetrayne complexes (5). The use of bis(propargyl ether) complex (8) with (3a) allows formation of a mixed cyclophanetetrayne complex (9), and in addition gives retro-Nicholas/intramolecular Nicholas reaction product (2).