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Ein neuartiger Zugang zu kondensierten Pyridinen
20 August 2002 (online)
A New Method for the Synthesis of Ring-Fused Pyridines: An easy, one-step synthesis of pyridine derivatives 4 has been developed by condensation of enamines with iminium salts (Method A). This method could also be modified to yield unsymmetrically substituted derivatives (condensation of Mannich bases with ketones; Method B).