An anti-tetraamination of a 1,3-diene unit via cascade annulations of the azulenone scaffold with dicarbonyl azo-compounds?

Chemical Communications Pub Date: 2010-03-15 DOI: 10.1039/B926676C

Abstract

Dense and stereo-controlled integrations of C–N bonds on the azulenone scaffold are achieved by sequential (i) ene, (ii) [6?+?2]-cycloaddition, and (iii) hetero-conjugate addition reactions leading to a topologically complex bis-bridged skeleton.

Graphical abstract: An anti-tetraamination of a 1,3-diene unit via cascade annulations of the azulenone scaffold with dicarbonyl azo-compounds
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