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The synthesis of ladder‐type oligomers by repetitive Diels‐Alder reactions is described. The title compound 1 has been treated with the “bis(dienophile)” 2 at high pressure (7.5 kbar). Under these conditions the formation of oligomers with up to 33 laterally anellated six‐membered rings has been achieved. An attempt has been made to analyze the complex stereochemistry of the cycloadditon by using the model compounds 5a, 5b.
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Wegener et al. (1991) studied this question.
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