Intramolecular cycloaddition of (allylimino)ketens: access to 3-azabicyclo[3.2.0]hept-2-en-7-ones
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 3,p. 92-93
- https://doi.org/10.1039/c39800000092
Abstract
Pyrolysis of the enamino esters (1 a, b) leads to the (allylimino)keten intermediates (2 a, b) which by cycloaddition and 1,5-sigmatropic hydrogen shift are converted into the new bicyclic heterocycles (3 a, b), respectively, and, via the azatrienals (5), to the formylpyridines (6 a, b).Keywords
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