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Synthesis 1986; 1986(3): 190-192
DOI: 10.1055/s-1986-31507
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Dihydropyridines; V*. Synthesis of 4,4-Disubstituted 1,4-.Dihydropyridines by Photochemical Cycloaddition of Enaminecarbaldehydes and Alkenes

Lutz -F. Tietze* , Andreas Bergmann, Klaus Brüggemann
  • *Institut für Organische Chemie der Universität Göttingen, Tammannstraße 2, D-3400 Göttingen, Federal Republic of Germany
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Publication Date:
20 August 2002 (online)

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Photochemical cycloaddition of the enaminecarbaldehydes 1a-d and the alkenes 2a-f leads to the 2-hydroxytetrahydropyridines 4, which give directly or by treatment with trifluoroacetic acid the 1,4-dihydropyridines 5aa-5df in nearly quantitative yields.