metal exchange yields 2-picolylsodium, which can couple with 1 to form 13. A first metalation and coupling with 1 leads to 15, where the methine group is a site of choice for further metalation, because of the inductive effect of the picolyl groups. Subsequent coupling forms 16. The increased acidity at the methine group therefore overweighs steric hindrance, since no formation of 17 was observed.
Die Zersetzung von (I) zu Phthalsäure (II) und Diphenylpropen (III) wird in verschiedenen Medien, z.B. DMSO oder Pyridin, bei verschiedenen Temperaturen kinetisch untersucht.
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