"Reaction of N-Benzylideneanilines with Methyl 3-Aminocrotonate Catalyzed by Inorganic Solids"

Maria Balogh, Lionel Delaude, and Istvan Hermecz

journal cover 
          source: Heterocyclic Communications
            year: 1998
          volume: 4
      first page: 403
       last page: 410
             doi: not available

Abstract: N-Benzylideneanilines 1 react with methyl 3-aminocrotonate 2 in the presence of solid acidic catalysts (K10 montmorillonite or ZF520 zeolite) to give dimethyl 4-(substituted)phenyl-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylates 3 as major products. Methyl 2-(methoxycarbonylmethylene)-6-methyl-4-(substituted)phenyl-1,2,3,4-tetrahydro-5-pyridinecarboxylates 4 and methyl 4-(methoxycarbonylmethyl)-2-methyl-6-(substituted)phenyl-3-pyridinecarboxylates 5 were isolated as minor products.

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