Abstract
Dialkylaminomethyl-substituted calix[4]resorcinarenes have been reported long ago [1], but further transformations of these compounds were reported in a few publications [2–4], and the described transformations did not involve the dialkylaminomethyl group therein. An exception was the formation of the corresponding ammonium salts [5, 6] and thioamides [7]. Products of nucleophilic replacement of dialkylamino group in the above calix[4]resorcinarenes were not reported. On the other hand, deamination of phenolic Mannich bases is their typical reaction [8].
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