| Abstract
| - The Cadiot−Chodkiewicz coupling of cis-1,4-diethynyl-1,4-dimethoxycyclohexa-2,5-diene and thecorresponding ethynyl bromide gave a mixture of acetyenic macrocycles ranging from dimer to octamerin good isolable yields. The trimeric and tetrameric macrocycles have been structurally characterized bysingle-crystal X-ray crystallography. In the crystal structure of the trimeric macrocycle a molecule ofbenzene is sandwiched between a pair of macrocyles. The tetrameric macrocycle exhibited a tub-shapedconformation and encapsulated a molecule of ethyl acetate inside the tub.
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