Archiv der Pharmazie p. 335 - 339 (1993)
Update date:2022-07-29
Topics:
Troschutz
Luckel
Mertens
Reaction of enones 2a-d with nitroketeneaminals 3, 4, and 5 in refluxing ethanol yields the Michael adduct 8a and the bicyclic carbinolamines 9, 10, and 11. Dehydratisation of 9a-d in acidic medium leads to heteroanellated 1,4-dihydropyridines 12a-d. By means of 1H-NMR-data the relative configuration of 10d is determined.
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