Abstract:Die durch Kondensation des Enolethers (I) mit in m‐ bzw. p‐Stellung lithiiertem Toluol erhaltenen Tolylcyclohexenone (III) setzen sich mit den Biphenylen (IV) zu den 4 verschiedenen isomeren Quaterphenylen (Va) um, während (VIa) durch Behandeln von 2‐Iod‐3′‐methyl‐biphenyl mit Naturkupfer Cbei 200°C (Ullmann‐Reaktion) hergestellt wird.
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