Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Preparation of Pyrido- and Azepino-fused Cycl[3.2.2]azines
Michihiko NoguchiNoriyuki TanigawaShoji Kajigaeshi
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1985 Volume 58 Issue 12 Pages 3444-3447

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Abstract

Pyrido- and azepino-fused cycl[3.2.2]azines were obtained by the reaction of the corresponding pyrido- and azepino[hi]indolizines with electron-deficient acetylenes in the presence of appropriate oxidants. The reaction pathway of their preparation was proposed to be a sequence of Michael addition of indolizine to acetylene, 10π-electrocyclic reaction of Michael adduct, and dehydrogenation by means of the chemical conversions of the isolated intermediates.

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