The reaction of Me(hexynyl)CuLi with (Me3Si)2 NCH2-C![[triple bond, length half m-dash]](https://www.rsc.org/images/entities/char_e007.gif)
C-CO2Et followed by treatment with a diacid dichloride gave a facile access to meta-dipyrrolyl benzene or 2,6-dipyrrolyl pyridine derivatives, which were cyclised to tetrapyrrolic macrocycles 7 and 9; further reactions with Pd(acac)2 or Ni(acac)2 led to bimetallic complexes.
R. J. P. Corriu, G. Bolin, J. J. E. Moreau and C. Vernhet, J. Chem. Soc., Chem. Commun., 1991, 211 DOI: 10.1039/C39910000211
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