The first 1,7-electrocyclizations of butadienyl pyridinium ylides: Stereoselective formation of 1,2-annulated 2,3-dihydroazepines

DOI: 10.1016/S0040-4020(97)01045-4

Source and publish data:

Tetrahedron p. 14687 - 14700 (1997)

Update date:2022-07-29

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Authors:

Marx, Karsten

Eberbach, Wolfgang

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Article abstract of DOI:10.1016/S0040-4020(97)01045-4

Upon deprotonation of pentadienyl substituted pyridinium bromides 6/13, conjugated azomethine ylide-type dipoles are formed which undergo stereoselective 8π-electrocyclization affording 10,10a-dihydropyrido[1,2-a]-azepines 8a-k and 15a,b, respectively.

Full text of DOI:10.1016/S0040-4020(97)01045-4

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