
Zeitschrift fur Naturforschung, B: Chemical Sciences p. 421 - 430 (1996)
Update date:2022-08-03
Topics:
Mo?hrle
Von Der Lieck-Waldheim
2,3-Dihydro-1,4-diazepinium salts could not be aminomethylated with conventional methods, but the hydrochlorides produced with methyleniminium salts the C-Mannich-compounds. The reactivity of the substrate was mainly controlled by electronic effects of the substituents. Aminomethylation of 1,5-diazapentadienium salts occurred only if the conformations caused no steric hindrance of the β-C-atom. Methyl substituted 2,3-dihydro-1,4-diazepinium salts reacted with 1,3,5 triazine to pyrimidine anellated derivatives.
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